AP Physics 1 UNIT 1 Review

Which of the following is a scalar quantity?

• Velocity

• Displacement

• Speed

• Acceleration

What is the correct kinematic equation for uniformly accelerated motion (UAM) when initial velocity (u), acceleration (a), and time (t) are given & final velocity is required(v)?

• v = u + at

• s = ut + 0.5at^2

• v^2 = u^2 + 2as

• s = vt - 0.5at^2

Which graph represents an object moving with constant acceleration?

• A straight line with a positive slope on a velocity-time graph

• A horizontal line on a velocity-time graph

• A parabolic curve on a position-time graph

• A straight line with a negative slope on a position-time graph

In projectile motion, what is the horizontal acceleration of the projectile?

• 9.8 m/s^2

• 0 m/s^2

• Depends on the initial velocity

• Depends on the angle of projection

A cell phone is dropped from the window of a car moving at 15m/s. In this case, consider if there is a wind pushing in an opposite direction to the car's motion at 2.5m/s. Determine the relative horizontal velocity of the cell phone from the perspective of a stationary observer. Record your 3 digit answer below without units NOTE: vector addition answers requires a +or- to accompany the relative velocity (ex +15m/s or -2.5m/s)

(a)