Question

# a) At t=0 s a car is moving along a straight line at 12.0 m/s. At t=4.0 s, the driver brakes and the car undergoes

constant deceleration, coming to a complete stop at t=22.0 s. How far (in m) does the car move between t=0 s and the time it stops?

b) An object is moving with an initial velocity of 6.9 m/s and a final velocity 26.0 m/s. The time taken for acceleration is 6.2 seconds. Calculate the acceleration in m/s2 to 2 sf.

c)Calculate the y-component of the acceleration vector **a**, which has a magnitude of 3.35 m/s2 and has an angle below the positive x-axis of 36.1 degrees.

d)An object is thrown with an initial speed v0 of 23 m/s at an angle 26 degrees with respect to the horizontal x-axis. Find the y-component of the initial velocity. Give your answers to 2 sf.

e)A football is kicked from ground level with a speed of 19.7 m/s at an angle of 29.0o. What is the maximum height attained by the football ? Give your answer to 3 sf.

g)You launch a projectile at a launch speed of 18.3 m/s at an angle of 46 degrees to the horizontal. Assuming that it lands at the same level as the launch height, what is the time of flight of the ball? Give your answer to 2 sf.