A car has an initial position of 2.7m, an initial velocity of -1.42 m/s, and a constant acceleration of 1.7m/s. What is the position of the car at the time of 1.65s? A. 1.96m С. 3.8m В. 6.7m D. 2.5m

A ball is tossed straight up from the ground. If it reaches the height of your bedroom window (2.0 m) and then falls straight back down to the ground, (g= 9.8 m/s?; Ignore air resistance and use at least 2 significant figures.) 1. What was its initial velocity? 2. How long is the ball in the air?

26. At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by -0.50t, in m/s² for t in seconds. By the time it stops it has traveled: A. 15 m В. 31 m С. 62 m D. 85 m Е. 100 m ans: D

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A speeding car travelling a uniform 77_m/s passes a police car at rest. What constant acceleration is needed by the police car to catch up to the speeding car in 1.4 km? 14.58_m/s² 7.674.m/s? 8.206 m/s? 11.82_m/s? А. D. В. 8.47 m/s? Е. С. 15.13_m/s? F.

From a height of 11.0 m an object is sent directly downward with an initial velocity of 1.2 m/s. Determine how long the object stays in the air before touching the ground below. 1.38 s 1.20 s 1.86 s ○ 1.00 s

More people end up in U.S. emergency rooms because of fall-related injuries than from any other cause. At what speed v would someone hit the ground who accidentally steps off the top rung of a 4.0 m tall stepladder?   a. 8.9 m/s   b. 7.1 m/s   c. 6.2 m/s   d. 8.0 m/s   e. 9.8 m/s A spring gun launches a heavy steel marble with an initial speed of 19.6 m/s. How long will the steel marble be in the air?     a. 6.0 s   b. 2.0 s   c. 3.0 s   d. 5.0 s   e. 4.0 s A car is traveling in a straight line along a straight, level road at 15.0 m/s when it uniformly accelerates at 3.00 m/s2 for a time of 6.00 s. How far does the car travel in this time?     a. 90 m   b. 54 m   c. 126 m   d. 162 m   e. 144 m

6. An object is thrown vertically upward with a speed of 12 m/s. How much time passes before it reaches a speed of 25 m/s downwards? (Air resistance is negligible.) а. 1.3 s b. 1.9 s d. 4.3 s e. 0.80 s с. 3.8 s

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An object is thrown upwards with a speed of 12 m/s. How long does it take to reach a height of 3.0 m above the projection point while descending? Neglect air resistance.     0.42 s     1.2 s     4.2 s     2.2 s     3.1 s