Test 1

Question 1

Which object has zero acceleration?
A) an object at rest
B) an object moving at constant velocity
C) an object in equilibrium 
D) all of the above 
E) none of the above

Answer 1

D) all of the above

Question 2

A car traveling at 100km/h strikes an unfortunate bug that splatters on the windshield. the force impact is greater on the

a) car
b) bug
c) same

Answer 2

c) same

Question 3

The unit for weight is

a) newton N
b) kilogram kg

Answer 3

a) newton N

Question 4

which of the following is not in equilibrium

a) car or cruise control heading south
b) moon orbiting the earth
c) all of these
d) book at rest on table

Answer 4

b) moon orbiting the sun

Question 5

a kilogram is measure of an object’s

a) force
b) weight
c) gravity
d) mass

Answer 5

d) mass

Question 6

when a baseball player hits a ball with a force of 1000N, the ball exerts force on the bat of

a) 1000N
b) less than 1000N
c) more than 1000N

Answer 6

a) 1000N

Question 7

a moving object has

a) energy
b) velocity
c) speed
d) all of the above

Answer 7

d) all of the above

Question 8

a box sliding across the floor eventually comes to a stop. Aristotle would explain this by saying

a) the box is reaching its natural state of motion - to be at rest
b) the box has a net force on it
c) the box’s inertia makes it stop
d) the box encounters friction

Answer 8

a) the box is reaching its natural state of motion- inertia