10/13 Quest

Question 1

Which is true about you at terminal velocity (along the axis where velocity is terminal)?

a) your velocity is zero
b) your acceleration is positive (and increasing)
c) your acceleration is negative (and constant)
d) the net force acting on you is zero

Answer 1

D

Question 2

How much force is needed to lift a 25 kg box off the ground?

a) 245
b) -245 N
c) 25 kg
d) not enough info

Answer 2

A

Question 3

An objects acceleration is equal to the

a) force divided by displacement
b) force divided by mass
c) force multiplied by displacement
d) mass multiplied by velocity

Answer 3

B

Question 4

A glass sitting on a tablets being filled with water, which is true?

a) the normal force of the glass is increasing
b) the normal force on the glass is decreasing
c) the normal force on the glass remains constant
d) there is no normal force on the glass

Answer 4

A

Question 5

In a perfectly elastic collision when an object strikes a wall, it’s velocity after the collision will be

a) unchanged
b) zero
c) opposite the initial velocity
d) greater than the initial velocity

Answer 5

C

Question 6

If our moon was twice as far away, it’s affect on the rides would be

a) unchanged
b) twice as large
c) half as large
d) four times less

Answer 6

D

Question 7

Before you vaporize, your mass on the sum real stove to the earth would be

a) unchanged
b) much greater
c) slightly greater
d) much less

Answer 7

A

Question 8

Newton’s first law of motion describes an injects tendency to

a) stay in motion
b) stay at rest
c) resist change in motion
d) all of the above

Answer 8

D