An athlete who is initially at rest in a squatted position jumps vertically upward and then lands going back to the original squatted position (ending at rest with the same center of mass height as at the start). The time period under consideration begins just before the athlete starts the upward motion and ends just after she has landed and comes to rest back in the squatted position. Compare the magnitude and directions of the impulse from the force of the ground on the athlete to the impulse from gravity on the athlete during this time period. Note: there are no other significant forces other than the ground and gravity acting on the athlete during this time period.
Q: A stone of mass 5 kg drops from rest at a height of 6.11 m. What magnitude of impulse, J, does…
A:
Q: A ball of mass 1.52kg is thrown upward with a speed of 6.66 m/s. What is the magnitude of the…
A:
Q: A girl weighing 490 N jumps from a tree, and her center of mass falls a vertical distance of 1.80 m.…
A:
Q: The graph below shows a force exerted on an object that starts at F=2.6 N at time at t= 0 s and…
A: Given Area under the graph would be sum of area of the rectangle plus area of triangle Area of…
Q: A 1300 kg car moving at 5.2 m/s is initially traveling north in the positive y direction. After…
A: Calculate the initial momentum of the car. pi=mvijpi=(1300 kg)(5.2 m/s)jpi=(6760 kg⋅m/s)j Calculate…
Q: A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 56.0 m/s and…
A: The given values are, m=0.0600 kgu=-56.0 m/si^v=32.0 m/si^
Q: A girl weighing 455 N jumps from a tree, and her center of mass falls a vertical distance of 1.60 m.…
A: The weight of the girl, The vertical distance, The average force,
Q: Sam, a skilled archer, is practicing with his bow and arrow. He fires an arrow with a mass of0.05 kg…
A: Given Data:Force(F) = -50 NTime(t) = 0.02 secMass (m) = 0.05 kgUsing (Impulse = Force * Time)Impulse…
Q: F (N) 100 50 Average Force t (s) 0.15 0.30
A:
Q: An individual with a mass of 80kg is suspended 0.60m above the ground from a pull up bar. After…
A: Solution Given dataMass m=80kgDistance above tue ground h=0.60mthe momentum of the individual at…
Q: While a car is stopped at a traffic light in a storm, raindrops strike the roof of the car. The area…
A: area of the roof (A) = 5 m2mass of each rain drop (m) = 3.7×10-4 kg initial velocity (v) = 2.5…
Q: The graph below shows a force exerted on an object that starts at 0 at t= 0 s and increases to F=8.2…
A:
Q: girl weighing 530 N jumps from a tree, and her center of mass falls a vertical distance of 1.50 m.…
A:
Q: The magnitude of the net force exerted in the x direction on a 4.00-kg particle varies in time as…
A: m=4.00 kgForce is exerted in the x direction.
Q: A person is pushing a 8.58 kg block along a horiontal surface at a constant speed of 16.8 m/s. The…
A:
Q: You want to estimate from how high if it is safe to jump onto a concrete floor. For this, you…
A: Given data: Jumping height from chair is, h=0.50 m. Position shift during landing at first time is,…
Q: in a particular crash test, an automobile of mass 1280kg collides with a wall and bounces back off…
A: Given data: Mass (m) = 1280 kg Initial velocity (vi) = 23 m/s Final velocity (vf) = 2 m/s Time…
Q: A 2 kg obiect is moving to the right in the +x direction with a speed of 1 m/s when it experiences…
A: mass m = 2.0 kginitial speed u = +1 m/sFrom the given graph, it is evident that a force of magnitude…
Q: During a neighborhood baseball game in a vacant lot, a particularly wild hit sends a 0.145 kg…
A: Given data: m=0.145 kgv1=14.3 m/sv2=11.9 m/s Need to determine the magnitude of the impulse and…
Q: The force shown in the force-time diagram acts on a 2.5 kg object. Find the impulse of the…
A:
Q: A ball of mass 4.506 kg is thrown upward with a speed of 5.727 m/s. What is the magnitude of the…
A: Write the given values with the suitable variables. m=4.506 kgu=5.727 m/s Here, m is the mass and u…
Q: An estimated force vs. time curve for a baseball struck by a bat is shown in the figure below. (a)…
A: Given : Force vs time curve Fmax = 18000 N
Q: A truck of mass 1.5x10^4 kg travelling at 85 km/h [S] collides with a car of mass 1.2x10^3 kg…
A:
Q: In tae-kwon-do, a hand is slammed down onto a target at a speed of 15.4 m/s and comes to a stop…
A: Given Data:- Mass of the hand is m=0.770 kg Initial speed of the hand is vi=15.4 m/s Final speed of…
Q: A golf ball is moving at speed vo to the East. After deflecting off a tree, it moves at a speed of…
A: The objective of the question is to determine which of the given statements are true regarding the…
Q: A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 52.0 m/s and…
A: (a) The impulse is equal to the change in the momentum if the mass is constant and it is given by…
Q: A stone is dropped from a height of h1 = 3.55 m above the ground. After it bounces, it only makes it…
A:
Q: A 0.5kg ball is dropped on the floor from a height of 3m. It then rebounds to a height of 2.5m.…
A:
Q: In a dance jump, the dancer lifts their center of mass 40 cm. When they land, they bend their knees…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Consider an automobile accident in which a 1000 kg car strikes a tree in an inelastic collision. The speed of the car just before the collision was 72 km/hr. The duration of the impulse is 0.01s. What force does the passenger experience? In the same automobile, a passenger of mass 50 kg is sitting, unrestrained, in the front seat. The speed of the passenger was 72 km/hr before the collision and zero afterewards. The duration of the impulse that changes is or her momentum is again 0.01 s. What force does the passenger experience? Same automobile accident, except that the passenger is restrained by a seat belt and an air bag explodes at the moment of impact. The passenger's speed still changes from 72 km/hr to zero, but the air bag slows the time during which this change occurs to 0.01 s. What force does the passenger experience?A person is pushing a 8 kg block along a horiontal surface at a constant speed of 15.4 m/s. The person is applying a force of 8.9 N to the block at an angle of 36.7° above horizontal. If the block moves a distance of 3.55 m, what is the magnitude of the impulse parted upon the block by the force of gravity?irai, a 50 kg figure skater, lands on the ice her feet after landing the triple axel and immediately jumps up again to perform a double toe-loop. The instant before her skates first touch the ice after the triple axel, her vertical velocity is 3 m/s downward. Her velocity is 2 m/s upward when her skates leave the ice for the second jump, 0.8 s later. (a) What is the vertical impulse exerted on Mirai during the 0.8 s she is in contact with the ice between the two jumps? (b) What is the average net vertical force exerted on Mirai during this 0.8 s? (c) What is the average reaction force exerted upward by the ice on Mirai during the 0.8 s?
- Shown in the figure is a single ball with mass, m, and initial speed, v, hitting the ground at an angle. The ball bounces off the ground and leaves with the same speed as it initially had and makes the same angle with the ground as shown in the figure. What is the impulse by the ground on the ball in unit vector notation? Use the coordinate system directions shown. y O0 £ + mv sin(0) ŷ O 2mv cos (0) Î + 2mv sin(0) ŷ 00£ + 0 ŷ O0î + 2mv cos(0) ŷ O0f + 2mv sin(0) ŷA 1300 kg car moving at 6.3 m/s is initially traveling north in the positive y direction. After completing a 90° right-hand turn to the positive x direction in 3.6 s, the inattentive operator drives into a tree, which stops the car in 290 ms. What is the magnitude of the impulse on the car (a) due to the turn and (b) due to the collision? What is the magnitude of the average force that acts on the car (c) during the turn and (d) during the collision? (e) What is the angle between the average force in (c) and the positive x direction? (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units (e) Number i Units MacBook Pro esc > @ $ & 1 2 3 4 Q W E R Y tab S F K caps lock C V M hift fn control option commandYour task is to catch a 2.0 kg water balloon that is moving toward you at a velocity of 35 m/s. You have the options of catching the balloon over a period of 0.5 s or 1.5 s. Which method is the safest (driest) and why? Use the impulse-momentum approach to validate your answer.
- A 0.8 kg ball is traveling at 4.0 m/s and strikes a wall. The ball bounces off the wall with a velocity of 4.0 m/s in the opposite direction. If the contact with the wall by the ball lasts for 0.13 seconds, then the magnitude of the impulse on the ball is(a) If the impulse experienced during the collision is 200 Ns, use the information in the plot to calculate the peak force experienced during the collision. (b) Calculate the average force experienced during the collision.A football player is preparing to punt the ball down the field. He drops the ball from rest and it falls vertically 1.0 m down ongo his foot. After he kicks it, the ball leaves the foot with a speed of 18 m/s at an angle of 51 degrees above the horizontal. 1) what is the magnitude of the impulse delivered to the ball in Kg meters per sec as he kicks it? An american football has a mass of 420 g 2) at what angle in degrees above the horizontal is the impulse delivered to the football?
- A 71.1-kg basketball player jumps vertically and leaves the floor with a velocity of 1.87 m/s upward. (a) What impulse does the player experience? magnitude N.S direction ---Select- (b) What force does the floor exert on the player before the jump? magnitude direction ---Select- (c) What is the total average force exerted by the floor on the player if the player is in contact with the floor for 0.450 s during the jump? magnitude direction ---Select--A 0.24 kg puck is initially stationary on an ice surface with negligible friction. At time t = 0, a horizontal force begins to move the puck. The force is given by F→=(16.0-3.43t2)î, with F→ in newtons and t in seconds, and it acts until its magnitude is zero. (a) What is the magnitude of the impulse on the puck from the force between t = 0.502 s and t = 1.98 s? (b) What is the change in momentum of the puck between t = 0 and the instant at which F = 0?