AnswersHonors PhysicsTwo-Dimensional Motion and Gravity

Practice Test Answers

16 verified answers2 views
1
Free Preview

He wants to throw the pitch level with the ground and in the direction he is facing. At which point should he release the pitch?

A
W
B
X
C
Y
D
Z
2
Free Preview

How far from the center of the ride is the child?

A
0 point 2 7 m
B
0 point 0 8 5 m
C
0 point 0 6 8 m
D
0 point 3 6 m
3

What change should Rahul make?

A
He should change the direction of the vectors that are tangent to the circle so that each points away from the center of the circle.
B
He should change the direction of the vectors that are tangent to the circle so that each points toward the center of the circle.
C
He should change the length of each vector that points toward the center so that it is the same length as the vector pointing tangent to the circle at that point.
D
He should change the lengths of the vectors that point tangent to the circle so that each is the same length.
4

Which formula can be used to find the centripetal acceleration of an orbiting object?

A
A sub c is equal to the fraction with numerator v squared and denominator cap t
B
A sub c is equal to the fraction with numerator square root of v and denominator r
C
A sub c is equal to the fraction with numerator square root of v and denominator cap t
D
A sub c is equal to the fraction with numerator v squared and denominator r
5

Which best illustrates projectile motion?

A
Image with description An illustration depicting five stages of a person jumping across a landscape. The sequence shows a person starting in a crouched position on the left, jumping into the air through three mid-air positions, and landing in a crouched position on the right. The five stages form a curved, arch-like path.
B
Image with description An illustration depicting four stages of a hot air balloon moving across a landscape. The sequence shows the balloon at four different positions as it moves horizontally in a straight line at a constant height.
C
Image with description An illustration depicting three stages of a person swimming in a straight line across a pool. The sequence shows a swimmer in a single lane, captured at three different points as they move horizontally from left to right.
D
Image with description An illustration depicting three stages of a rocket launch. The sequence shows a rocket starting on the ground and moving straight upward through two subsequent mid-air positions in a vertical line.
6

According to Newton’s universal law of gravitation, which would change the path of the ball so it traces out the widest curved path possible? Cecelia dropped a ball from a height of 2 m The ball fell in a straight path down to the ground.

A
dropping it from a shorter distance
B
tossing it horizontally at a slower speed
C
dropping it from a greater distance
D
tossing it horizontally at a faster speed
7

A boat travels in a straight path that is 25 degrees west of north. Which describes the values of the west and north components of the boat’s displacement?

A
The west component is a negative number, and the north component is a positive number.
B
Both components are positive numbers.
C
Both components are negative numbers.
D
The west component is a positive number, and the north component is a negative number.
8

In the equation for the gravitational force between two objects, what does cap g represent?

A
the gravitational constant
B
the gravitational acceleration
C
the gravitational field strength
D
the gravitational force
9

What is the vertical acceleration of a dart that is launched horizontally with an initial velocity of 2 point 3 m/s ?

A
9 point 8 m/s squared
B
negative 9 point 8 m/s squared
C
2 point 3 m/s squared
D
0 m/s squared
10

In the equation for centripetal force, which expression represents the centripetal acceleration of the object?

A
m over r
B
the fraction with numerator m v squared and denominator r
C
m v squared
D
the fraction with numerator v squared and denominator r
11

What did Johannes Kepler contribute to the study of planets?

A
He identified the first moons of Jupiter.
B
He collected detailed data that led to the proposal of the heliocentric model.
C
He provided mathematical support for the heliocentric model.
D
He formulated the universal law of gravitation.
12

The gravitational force between two asteroids is 6 point 2 times 10 to the 8th power cap n Asteroid cap y has three times the mass of asteroid cap z If the distance between the asteroids is 2100 kilometers, what is the mass of asteroid cap y ?

A
3 point 7 times 10 to the 15th power kilograms
B
1 point 4 times 10 to the 31th power kilograms
C
1 point 1 times 10 to the 16th power kilograms
D
4 point 1 times 10 to the 31th power kilograms
13

Which statement is supported by Kepler’s laws?

A
As a planet moves away from the Sun, its gravitational force increases.
B
The closer a planet is to the Sun, the faster it moves.
C
As a planet moves away from the Sun, its gravitational force remains the same.
D
The farther a planet is from the Sun, the faster it moves.
14

A car drives 16 miles south and then 12 miles west. What is the magnitude of the car’s displacement?

A
16 miles
B
28 miles
C
20 miles
D
4 miles
15

In the equation for centripetal force, which expression represents the centripetal acceleration of the object?

A
m v squared
B
the fraction with numerator m v squared and denominator r
C
m over r
D
the fraction with numerator v squared and denominator r
16

How far from the center of the ride is the child?

A
0 point 2 7 m
B
0 point 0 8 5 m
C
0 point 3 6 m
D
0 point 0 6 8 m

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Quiz

Quiz
10 verified answers

Quiz