2024 Fall - Physics Final Exam

Front

What describes how velocity changes?

Back

Acceleration is the rate at which velocity changes over time.

Front

Calculate vf if vi = 4 m/s, a = 5 m/s², and delta x = 2m. What is vf?

Back

vf = 6 m/s

Front

What is the formula to calculate distance when initial velocity, acceleration, and time are known?

Back

x = v_i * t + ½ * a * t²

Front

If a policeman accelerates from 19.5 m/s at a rate of 1.81 m/s² for 3.2 s, what distance does he cover?

Back

The distance covered is 71.67 m.

Front

What is instantaneous speed?

Back

Instantaneous speed is the speed of an object at a specific moment in time.

Front

What is Sam's instantaneous speed at the red light if his speedometer reads 0 m/s?

Back

Sam's instantaneous speed is 0 m/s.

Front

Inertia depends on what property of an object?

Back

Inertia depends on mass.

Front

Define velocity.

Back

Velocity is the speed of an object in a specific direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is the formula for acceleration?

Back

Acceleration (a) = (final velocity (vf) - initial velocity (vi)) / time (t).