Gravity Answers
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Which statement best compares the accelerations of two objects in free fall?
A
The heavier object has a greater acceleration.B
The object that has the greater surface area has the lower acceleration.C
The object that has the smaller mass has the greater acceleration.D
The objects have the same acceleration.2
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What units are used to measure mass and weight?
A
Mass and weight are measured in kilograms.B
Mass and weight are measured in newtons.C
Mass is measured in kilograms, and weight is measured in newtons.D
Mass is measured in newtons, and weight is measured in kilograms.3
Hector drew the diagram below to illustrate projectile motion.
A
He should switch the labels “Gravity” and “Inertia.”B
He should make the arrow for “Path” curve downward.C
He should switch the labels “Inertia” and “Path.”D
He should make the arrow for “Inertia” curve downward.4
What is the weight, on Earth, of a book with a mass of 1.5 kg?
A
1.5 NB
6.5 NC
11.3 ND
14.7 N5
A ball is thrown forward at 5 m/s.
A
The ball would follow a curved path on Earth but a straight path on the moon.B
The ball would follow the same curved path on Earth as on the moon.C
The ball would curve down more sharply on Earth than on the moon.D
The ball would curve down on Earth but curve up on the moon.6
Increasing which factor will cause the gravitational force between two objects to decrease?
A
weights of the objectsB
distance between the objectsC
acceleration of the objectsD
masses of the objects7
When does a skydiver achieve terminal velocity?
A
when gravity equals air resistanceB
when gravity is greater than air resistanceC
when air resistance acts on the diver and gravity does notD
when gravity acts on the diver and air resistance does not8
Why are objects that fall near Earth’s surface rarely in free fall?
A
Gravity does not act on objects near Earth’s surface.B
Air exerts forces on falling objects near Earth’s surface.C
The objects do not reach terminal velocity.D
The objects can be pushed upward by gravity.9
A spacecraft is launched from Earth toward the moon.
A
closer to Earth than to the moon because the moon has greater mass than EarthB
closer to the moon than to Earth because the moon has greater mass than EarthC
closer to Earth than to the moon because Earth has greater mass than the moonD
closer to the moon than to Earth because Earth has greater mass than the moon10
Which describes an object in projectile motion?
A
Gravity acts to push the object sideways.B
The object moves in a straight path.C
The forward velocity of the object is 0 m/s.D
The object’s inertia carries it forward.Did you find these answers helpful?
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