Question 1

A student walks to the right with a constant speed of 2.0 m/s for 2.0 s. What is the student's acceleration?

Accepted Answer

$$0$$

Question 2

A car is moving to the right and slowing down. Which of the following best describes the sign of its velocity and acceleration?

Accepted Answer

Velocity is positive, acceleration is negative

Question 3

A Corvette accelerates from rest to $$30\ \mathrm{m/s} in$$ $$4.0\ \mathrm{s}. $$What is its average acceleration?

Accepted Answer

$$7.5\ \mathrm{m/s^2$}$$

Question 4

A student is walking to the right, changing speed from $$2.0\ \mathrm{m/s} to$$ $$6.0\ \mathrm{m/s} in$$ $$2.0\ \mathrm{s}. $$What is the acceleration?

Accepted Answer

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

Question 5

Which of the following scenarios describes an object with zero acceleration?

Accepted Answer

A car moving to the right with a constant speed

Question 6

A car accelerates from $$0 to$$ $$12\ \mathrm{m/s} in$$ $$4.0\ \mathrm{s}. $$What is the area under the velocity-time graph for this interval?

Accepted Answer

$$24\ \mathrm{m}$$

Question 7

An elevator is moving downward and slows to a stop as it approaches the ground floor. What is the sign of its acceleration?

Accepted Answer

Positive

Question 8

Zach, whose mass is $$80\ \mathrm{kg}$$, is in an elevator going down at $$10\ \mathrm{m/s}. $$The elevator takes $$4.0\ \mathrm{s} to $$brake to a stop. What is Zach’s acceleration?

Accepted Answer

$$-2.5\ \mathrm{m/s^2$}$$

Question 9

Which of the following is true about acceleration and velocity?

Accepted Answer

Acceleration is the rate of change of velocity

Question 10

A car is moving to the left and speeding up. What are the signs of its velocity and acceleration?

Accepted Answer

Both velocity and acceleration are negative

Question 11

A car starts from rest and accelerates at $$3.0\ \mathrm{m/s^2$}$$ for $$5.0\ \mathrm{s}. $$What is its final velocity?

Accepted Answer

$$15.0\ \mathrm{m/s}$$

Question 12

Which of the following best describes the area under a velocity-time graph?

Accepted Answer

Displacement

Question 13

A car is moving to the left and slowing down. What is the sign of its acceleration?

Accepted Answer

Positive

Question 14

A car accelerates uniformly from $$5.0\ \mathrm{m/s} to$$ $$25.0\ \mathrm{m/s} in$$ $$4.0\ \mathrm{s}. $$What is the acceleration?

Accepted Answer

$$5.0\ \mathrm{m/s^2$}$$

Question 15

Which of the following is NOT a way to accelerate?

Accepted Answer

Moving at a constant speed in a straight line

Question 16

A car is moving to the right and speeding up. Which of the following statements is true?

Accepted Answer

Both velocity and acceleration are positive

Question 17

A car starts from rest and accelerates at $$2.0\ \mathrm{m/s^2$}$$ for $$6.0\ \mathrm{s}. $$What is the displacement during this time?

Accepted Answer

$$36.0\ \mathrm{m}$$

Question 18

Which of the following has a positive acceleration? Select all that apply.

Accepted Answer

A car is moving to the left and slowing down

Question 19

A car is moving to the left, changing speed from $$6.0\ \mathrm{m/s} to$$ $$2.0\ \mathrm{m/s} in$$ $$2.0\ \mathrm{s}. $$What is the acceleration?

Accepted Answer

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

Question 20

Which kinematic equation would you use to find the final velocity of an object given its initial velocity, acceleration, and displacement?

Accepted Answer

$$(v_{x})_f^2$ = (v_{x})_i^2$ + 2a_x \Delta x$$

Acceleration and Motion in One Dimension: Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard