Acceleration

Front

What does a speedometer on a vehicle measure? Options: instantaneous speed, instantaneous velocity, average speed, average velocity.

Back

instantaneous speed

Front

What can you not determine from a vx-t graph for an object moving with constant acceleration? Options: the object’s x-acceleration at any time t, the object’s x-velocity at any time t, the object’s position at any time t, more than one of the above, misleading question—you could determine all of these from the vx-t graph alone

Back

the object’s position at any time t

Front

This is the x-t graph of the motion of a particle. Of the four points P, Q, R, and S, the velocity is greatest (most positive) at P, Q, R, S

Back

P

Front

This is the x-t graph of the motion of a particle. Of the four points P, Q, R, and S, the speed is greatest at P, Q, R, S

Back

R

Front

This is the x-t graph of the motion of a particle. Of the four points P, Q, R, and S, the acceleration is greatest (most positive) at

Back

S

Front

At the highest point in the ball’s motion, what are its velocity and acceleration?

Back

Its velocity is zero and its acceleration is negative (downward).

Front

Motion diagram of an object moving along the x-direction with constant acceleration. At time 3, what are the signs of velocity v and acceleration a? Options: v< 0, a= 0, v< 0, a< 0, v> 0, a< 0, v< 0, a> 0

Back

v< 0, a< 0

Front

Motion diagram of an object moving along the x-direction with constant acceleration. Which vx-t graph matches the motion?

Back

Front

Motion diagram of an object moving along the x-direction with constant acceleration. Dots 1, 2, 3, … show position at equal time intervals ∆t. Which ax–t graph matches this motion?

Back

Front

An object moves along the x-axis with constant acceleration. The initial position x is positive, the initial velocity is negative, and the acceleration is positive. Which vx-t graph best describes this motion?

Back