Combined: Pre-AP physics WPE review + Pre-AP Forces, Newtons laws, horizontal and incline + ...

Question 1

7

Accepted Answer

b

Question 2

18

Accepted Answer

c

Question 3

27

Accepted Answer

b

Question 4

24

Accepted Answer

d

Question 5

projectile motion, no air resistance, the horizontal component of a projectile's acceleration

Accepted Answer

is always zero

Question 6

14

Accepted Answer

c

Question 7

30

Accepted Answer

a

Question 8

28

Accepted Answer

a

Question 9

A block of mass m sits at rest on a rough inclined ramp that makes an angle θ with the horizontal. Friction is?

Accepted Answer

f = mg sin θ

Question 10

initial speed is 8.0 m/s at 40° above the horizontal. dy = 1m what angle does it land at?

Accepted Answer

48

Question 11

An object is moving with constant non-zero velocity. Which of the following statements about it must be true?

Accepted Answer

The net force on the object is zero.

Question 12

9

Accepted Answer

d

Question 13

4

Accepted Answer

d

Question 14

3

Accepted Answer

d

Question 15

shot horizontally; dy = -24 m, strikes the ground at dx = 18 m. what is vx if negligible air resistance?

Accepted Answer

8.1 m/s

Question 16

23

Accepted Answer

a

Question 17

Which statement is true about an object in projectile motion with no air resistance?

Accepted Answer

The ax is zero and ay is a non-zero constant

Question 18

21

Accepted Answer

c

Question 19

1

Accepted Answer

c

Question 20

If you pound a feather with a hammer, which one feels a greater force?

Accepted Answer

The size of the force is always exactly the same on both of them.

Question 21

16

Accepted Answer

d

Question 22

26

Accepted Answer

a

Question 23

20

Accepted Answer

b

Question 24

What is the mass of an object that experiences a gravitational force of 685 N near Earth's surface where g = 9.80 m/s2?

Accepted Answer

69.9 kg

Question 25

6

Accepted Answer

d

Question 26

5

Accepted Answer

d

Question 27

g = 10.0 m/s2 , vix = 86.6 m/s, and viy = 50.0 m/s . How long does it take to hit the ground?

Accepted Answer

10s

Question 28

11

Accepted Answer

b

Question 29

If a cat jumps at 60° from the ground and vix = 2.74m/s what is the max height?

Accepted Answer

1.15m

Question 30

A crate is sliding down an inclined ramp at a constant speed of 0.55 m/s. The vector sum of all the forces is

Accepted Answer

None of the above choices is correct.

Question 31

vi = 15 m/s directed at 65° from the horizontal. If its in the air 3.1s. What is the magnitude (+/-) of the height?

Accepted Answer

4.95 m

Question 32

A 200-N sled of slides down a frictionless hillside that is 37° above the horizontal. What is FN?

Accepted Answer

160 N

Question 33

25

Accepted Answer

c

Question 34

A 75-N box rests on a perfectly smooth horizontal surface. The minimum force need to start the box moving is

Accepted Answer

any horizontal force greater than zero.

Question 35

22

Accepted Answer

a

Question 36

12

Accepted Answer

b

Question 37

13

Accepted Answer

d

Question 38

6

Accepted Answer

W + P sin θ.

Question 39

8

Accepted Answer

a

Question 40

19

Accepted Answer

d

Question 41

2

Accepted Answer

c

Question 42

vi = 20 m/s at 60° above the horizontal. what is vx at the exact top of its trajectory?

Accepted Answer

10m/s

Question 43

10

Accepted Answer

b

Question 44

2

Accepted Answer

slowing down.

Question 45

17

Accepted Answer

b

Combined: Pre-AP physics WPE review + Pre-AP Forces, Newtons laws, horizontal and incline + ...

Questions 45

Combined: Pre-AP physics WPE review + Pre-AP Forces, Newtons laws, horizontal and incline + ...

Questions 45