Question 1

A sprinter accelerates uniformly from rest to a speed of $9.0\ \mathrm{m/s}$ in $3.0\ \mathrm{s}$. What is the sprinter's acceleration?

Accepted Answer

$2.0\ \mathrm{m/s^2}$

Question 2

A motorcycle accelerates from $20\ \mathrm{km/h}$ to $50\ \mathrm{km/h}$ in $4.0\ \mathrm{s}$. What is the average acceleration in $\mathrm{m/s^2}$?

Accepted Answer

$2.1\ \mathrm{m/s^2}$

Question 3

A puck moving at $18\ \mathrm{m/s}$ hits a barrier and rebounds at $12\ \mathrm{m/s}$ in the opposite direction. The collision lasts $0.3\ \mathrm{s}$. What is the average acceleration of the puck during the collision?

Accepted Answer

$-100\ \mathrm{m/s^2}$

Question 4

A ball is thrown vertically upward with a speed of $12\ \mathrm{m/s}$. Assume that gravitational acceleration is $g = 9.8\ \mathrm{m/s^2}$ [down]. How long does it take to reach its highest point?

Accepted Answer

$0.82\ \mathrm{s}$

Question 5

A car travels along a straight road. Its velocity-time graph shows a linearly decreasing velocity from $20\ \mathrm{m/s}$ to $0\ \mathrm{m/s}$ over $10\ \mathrm{s}$. What is the car's acceleration?

Accepted Answer

$-0.5\ \mathrm{m/s^2}$

Question 6

A hockey puck slides across ice and comes to a stop due to friction. If its initial speed is $8.0\ \mathrm{m/s}$ and it stops in $4.0\ \mathrm{s}$, what is the coefficient of kinetic friction between the puck and the ice? (Assume $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$0.10$

Question 7

Calculate the weight on Jupiter of a $60\ \mathrm{kg}$ astronaut. (Jupiter's gravitational acceleration is $24.8\ \mathrm{m/s^2}$)

Accepted Answer

$1,488\ \mathrm{N}$

Question 8

A $12\ \mathrm{kg}$ box is pushed across a rough surface with a constant velocity using a horizontal force of $60\ \mathrm{N}$. What is the coefficient of kinetic friction? (Assume $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$0.51$

Question 9

Two hockey players, Anna ($55\ \mathrm{kg}$) and Ben ($75\ \mathrm{kg}$), stand on frictionless ice. Anna pushes Ben with a force of $300\ \mathrm{N}$ for $2.0\ \mathrm{s}$. What is Anna's acceleration during the push?

Accepted Answer

$5.5\ \mathrm{m/s^2}$

Question 10

A net force of $12\ \mathrm{N}$ gives mass A an acceleration of $3.0\ \mathrm{m/s^2}$ and mass B an acceleration of $6.0\ \mathrm{m/s^2}$. What is the combined acceleration if A and B are fastened together and acted on by the same force?

Accepted Answer

$2.0\ \mathrm{m/s^2}$

Question 11

A $2.0\ \mathrm{kg}$ box is pushed across a rough surface with a constant velocity using a horizontal force of $10\ \mathrm{N}$. What is the frictional force acting on the box?

Accepted Answer

$10\ \mathrm{N}$

Question 12

A car moves at $20\ \mathrm{m/s}$ and comes to rest in $5.0\ \mathrm{s}$ due to braking. What is the magnitude of its acceleration?

Accepted Answer

$4.0\ \mathrm{m/s^2}$

Question 13

A $16\ \mathrm{kg}$ toolbox is pushed across a rough surface with a constant velocity using a horizontal force of $60\ \mathrm{N}$. What is the normal force acting on the box? (Assume $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$156.8\ \mathrm{N}$

Question 14

A car accelerates from $0$ to $30\ \mathrm{m/s}$ in $6.0\ \mathrm{s}$. What is the distance covered during this time?

Accepted Answer

$180\ \mathrm{m}$

Question 15

A $5.0\ \mathrm{kg}$ mass is acted on by a net force of $20\ \mathrm{N}$. What is its acceleration?

Accepted Answer

$4.0\ \mathrm{m/s^2}$

Question 16

A $2.0\ \mathrm{kg}$ object is dropped from rest from a height of $20\ \mathrm{m}$. Neglecting air resistance, what is its speed just before hitting the ground? (Assume $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$19.8\ \mathrm{m/s}$

Question 17

A $10\ \mathrm{kg}$ box is pulled with a force of $50\ \mathrm{N}$ at an angle of $30^\circ$ above the horizontal. What is the horizontal component of the pulling force?

Accepted Answer

$43.3\ \mathrm{N}$

Question 18

A $1.5\ \mathrm{kg}$ object is moving at $4.0\ \mathrm{m/s}$ on a frictionless surface. What is its kinetic energy?

Accepted Answer

$12.0\ \mathrm{J}$

Question 19

A $2.0\ \mathrm{kg}$ object is dropped from a height of $10\ \mathrm{m}$. How much time does it take to reach the ground? (Assume $g = 9.8\ \mathrm{m/s^2}$)

Accepted Answer

$1.43\ \mathrm{s}$

Question 20

A $3.0\ \mathrm{kg}$ object is acted on by a net force of $15\ \mathrm{N}$ for $4.0\ \mathrm{s}$. What is the change in velocity of the object?

Accepted Answer

$20\ \mathrm{m/s}$

Physics Midterm Review: Quantitative and Conceptual Problems

Study Guide - Practice Questions

Study Guide - Flashcards