A person who is properly restrained by an over-the-shoulder seat belt has a good chance of surviving a car collision if the deceleration does not exceed 30 “g’s”( 1.00g= 9.80 m/s2) Assuming uniform deceleration at 30 g’s, calculate the distance over which the front end of the car must be designed to collapse if a crash brings the car to rest from 95 km/h

Q: A woodpecker's brain is specially protected from large decelerations by tendon-like attachments…

A: (a) initial velocity, u = 0.6 m/sfinal velocity, v = 0 m/s distance, s = 2 mmLet the acceleration is…

Q: A woodpecker’s brain is specially protected from large accelerations by tendon-like attachments…

A:

Q: An athlete has an intuitive knowledge, gained by experience, of the changing nature of a ball in…

A: Let the initial horizontal component of the velocity of the ball = v Effects of air is ignored…

Q: The shot put is a trackand- field event in which athletes throw a heavy ball— the shot—as far as…

A: Basically the ball follows a projectile motion. So there would be both the x and y component…

Q: A basketball player jumps straight up for a ball. To do this, he lowers his body 0.330 m and then…

A: we use the concept of equation of motion and Newton's laws of motion.

Q: An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s…

A:

Q: A 100kg astronaut (including the space suit) becomes untethered during a space walk and drifts to a…

A: Since there is no external force acting on the system, the net momentum will remain conserved.…

Q: Given the quantities a=4.5 m, b=1.4s, c=43 m/s, what is the value of the quantity d = cb²

A: We are given 3 physical quantities. We are given the values also for those physical quantities. We…

Q: A 15 kg rock is dropped from rest on the Earth and reaches the ground in 1.75 s. When it is dropped…

A:

Q: The range of a projectile depends not only on v0 and but also on the value g of the free-fall…

A: Given:  Range, R = 8.09 m g = 9.8128 m/s2 g' = 9.7999 m/s2

Q: 2. Determine the time needed for the rocket to reach an altitude of 100m, if it is given an…

A: Given : altitude, s = 100 m  Acceleration , a = (6 + 0.02 s) m/s2  Find : time needed

Q: A penny is thrown vertically upward with a speed of 10 m/s. Exactly 1 second later a dime is thrown…

A: given,

Q: Homer Agin leads the Varsity team in home runs. In a recent game, Homer hit a 96 mi/hr sinking curve…

A:

Q: Suppose a small child rolls off a bed that is 0.48m above the floor. If hardwood, the child's head…

A: The objective of the question is to calculate the magnitude and duration of deceleration when a…

Q: The human body can survive an acceleration trauma incident (sudden stop) if the magnitude of the…

A: Given data a=250 m/s2V=105 km/hr=29.17 m/sec

Q: 4. The velocity of the falling parachutist can be computed by v(t) = Use a first-order error…

A:

Q: When you blink your eye, the upper lid goes from rest with your eye open to completely covering your…

A: We need to figure out how much your eye's upper lid travels when you blink.

Q: A rocket is launched vertically upward from rest on the ground, and its thrust gives the rocket a…

A: Given: a1 =6 m/s2 (upwards)t 1=19.6 s

Q: Given "A large boulder is ejected vertically upward from a volcano with an initial speed of 40.1 m/s…

A: Explanation:-Since, acceleration due to gravity near the surface of the earth and upto some height…

Q: #2) For this problem, ignore air resistance and assume the magnitude of the acceleration due to…

A: A) Write the second kinematic equation and substitute the corresponding values to calculate the…

Q: 2/44 The driver of a car, which is initially at rest at the top A of the grade, releases the brakes…

A:

Q: A basketball player jumps straight up for a ball. To do this, he lowers his body 0.310 m and then…

A:

Q: The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows…

A: Given data: The acceleration of truck is a=-5.60 m/s2. The time taken is t=4.20 s. The distance…

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –