Unit 1: 1-D Motion Equations

Question 1

True or false: speed is a vector

Answer 1

false

Question 2

True or false: displacement is a vector

Answer 2

true

Question 3

True or false: velocity is a vector

Answer 3

true

Question 4

True or false: distance is a vector

Answer 4

false

Question 5

True or false: acceleration is a vector

Answer 5

true

Question 6

Define acceleration.

Answer 6

The rate at which an object’s velocity changes.

Question 7

Can an object have a displacement of zero and a non-zero constant acceleration over the same time interval?

Answer 7

Yes, if the initial displacement = final displacement. (xi = xf)

Question 8

True or false: an object can have a positive acceleration while having a negative displacement.

Answer 8

true

Question 9

True or false: an object that has a velocity of zero must have an acceleration of zero.

Answer 9

false

Question 10

True or false: during some time interval, if an object’s average velocity is zero, it could have traveled a great distance.

Answer 10

true

Question 11

True or false: an object can speed up while it has a negative acceleration.

Answer 11

true

Question 12

True or false: when a ball s thrown straight up, at the apex its acceleration is zero.

Answer 12

false

Question 13

True or false: an object can move in the negative direction while it has a positive velocity.

Answer 13

false

Question 14

An object can move in the negative direction while it has a positive acceleration.

Answer 14

true