You want to estimate from how high if it is safe to jump onto a concrete floor. For this, you consider impulse and the force of impact. If you jump from a chair of height of 0.50 m, and land on a concrete floor with stiff legs, it just starts to hurt. Therefore, you consider the average force on your body in such a landing to be your ‘safe limit’. In this case, you estimate that your body moves by about 0.75 cm during the landing. If you allow yourself to bend your knees upon landing on the same concrete floor, you are able to mitigate the force of impact. You estimate that, when bending your knees during landing, your body moves by about a foot, or 0.30 m. For the purpose of this exercise, you consider yourself with a mass of 60 kg. Given the estimates made above, from how high can you safely jump onto a concrete floo

Q: A soccer player hits a 0.20 kg ball which is incoming with a speed 5 m/s. After the kick, the ball…

A: The average force is given by  F=∆p⇀∆t∆p⇀=change in momentum∆t=time interval

Q: As shown in the figure below, two blocks (m1 and m2) are each released from rest at a height of h =…

A:

Q: On a frictionless canvas a 5.5 kg block can slide along the x-axis and is subjected to a force of 80…

A:

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 girl weighing 490 N jumps from a tree, and her center of mass falls a vertical distance of 1.80 m.…

A:

Q: find the variables that will result in a speed of 30 km/h and with a direction of W 30˚ S after the…

A:

Q: A crane drops a 1.8 kg steel ball onto a steel plate. The ball's speeds just before impact and after…

A:

Q: A 65.1-kg basketball player jumps vertically and leaves the floor with a velocity of 1.96 m/s…

A: Given mass m = 65.1 kg initial velocity u = 0 m/s final velocity v = 1.96 m/s

Q: A 0.576-kg ball, initially moving with a speed of 2.93 m/s, bounces off a wall and then moves with a…

A:

Q: A volleyball weighing 0.38 kg approaches Zina with a velocity of 3.8 m / s. Zina hits it and gives…

A: Recall Favg=∆P/∆t

Q: A 550 g cart is released from rest on a frictionless, 45 ° ramp, 120 cm from the bottom of the ramp.…

A: Concept: Newton's second law states that an object's momentum changes as a result of a force acting…

Q: A satellite fires a thruster for 2 seconds to increase its speed by 3.0 m/s. If the satellite is 28…

A: According to the impulse-momentum theorem, we know that the change in momentum of a particle is…

Q: A crane drops a 1.8 kg steel ball onto a steel plate. The ball's speeds just before impact and after…

A: Mass of the crane(m)=1.8 kg Initial speed(vi)= -8.1 m/s Final speed (vf) =  3.7 m/s  Momentum…

Q: Two people (75 kg and 50 kg) skate together in a straight line at a speed of 5 m/sec. They push each…

A:

Q: A rubber ball hits the floor with a speed of 17.5 m/s and bounces vertically back with a speed of…

A: Refer explanationExplanation:Put value in above equation F=3.924/0.12= 32.7N Final answer is 32.7N

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: A 125 kg astronaut pushes on a 185 kg meteor for 3.00 seconds with a force of 100 N. What impulse do…

A:

Q: A 63.3-kg basketball player jumps vertically and leaves the floor with a velocity of 1.71 m/s…

A: Given that: Mass of basketball player, m= 63.3 kg Upward velocity, v= 1.71 m/s upward

Q: A crane drops a 1.9 kg steel ball onto a steel plate. The ball's speeds just before impact and after…

A:

Q: Create a perfectly inelastic collision where two objects collide and get stuck together. After the…

A:

Q: A bumper car slides along a horizontal surface on which the coefficient of kinetic friction is 0.2.…

A: Impulse-momentum relation F∆t=m∆v Here friction force is acting, -Ff∆t=m∆v                   F=-Ff,…

Q: A satellite fires a thruster for 3 seconds to increase its speed by 3.0 m/s. If the satellite is 20…

A: given , mass of the satellite , m = 20 kg speed increased , (final speed - initial speed)= (v-u) =…

Q: The man jumps from the window of a burning hotel and lands in a safety net that stops him fall in…

A: The guy enters the net at velocity u=27m/s. the net stops him from falling in 0.5m i.e., the guy…

Q: A truck with a mass of 1600 kg and moving with a speed of 13.5 m/s rear-ends a 585 kg car stopped at…

A: Mass of truck (M) = 1600 kg Mass of car (m) = 585 kg Initial velocity of truck (U) = 13.5 m/s…

Q: Water falls without splashing at a rate of 0.220 L/s from a height of 3.40 m into a 0.590-kg bucket…

A: The total weight that the scale will measure will be equal to the sum of the weight of the bucket,…

Q: With what impulse does a 0.30-kg newspaper have to be thrown to give it a velocity of 3.4 m/s?…

A:

Q: In a ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a…

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 0.24 kg blob of clay is thrown at a wall with an initial velocity of 23 m/s.  If the comes to a…

A: Acceleration is the change in velocity over time.

Q: A 71.1-kg basketball player jumps vertically and leaves the floor with a velocity of 1.91 m/s…

A: A)Impulse experienced by player = m U  = 71.1 * 1.91  = 135.8  N.s ( in upwards direction)B) F = mg…

Q: An oatmeal cookie is dropped on the floor. Is this an inelastic collision? Why or why not? It is…

A:

Q: A crane drops a 1.7 kg steel ball onto a steel plate. The ball's speeds just before impact and after…

A: