1st 9 Weeks Review

Question 1

A girl pushes a box to the right with 200N. The other girl pushes to the left with 45N. What is the N-force exerted?

Accepted Answer

155N

Question 2

A ball is kicked at 30 degrees at a speed of 20m/s. What's the acceleration in the y direc. at the ball's highest point.

Accepted Answer

10 m/s^2

Question 3

What direction does the weight go to in a FBD?

Accepted Answer

down

Question 4

During projectile motion, what is the acceleration of the projectile at its highest point?

Accepted Answer

10 m/s^2 downward

Question 5

What is the force of an object that is accelerating east at 15m/s^2 and has a mass of 200kg

Accepted Answer

3000 N

Question 6

A 10 kg mass weighs how much?

Accepted Answer

100 N

Question 7

A car starts from rest and accelerates uniformly over 5.21 seconds for a distance of 347.1 m. Determine acceleration.

Accepted Answer

a = 25.5 m/s/s

Question 8

An object in free fall with a mass of 200kg and a velocity of 7m/s. What is the Acceleration?

Accepted Answer

10m/s^2

Question 9

what is the symbol for normal force

Accepted Answer

N

Question 10

Object is pushed to left with force of 354 N and to right with force of 268 N. Whats external net force in X-direction?

Accepted Answer

-86 N

Question 11

What is Normal Force ?

Accepted Answer

The reactive force to forces applied to a surface

Question 12

If the force on an object doubles, what happens to the acceleration if the mass stays constant?

Accepted Answer

2x original acceleration

Question 13

A car travels in a straight line for 4.9 h at a constant speed of 95 km/h . What is its acceleration?

Accepted Answer

0 m/s^2

Question 14

What is static friction?

Accepted Answer

Force required to start an object moving

Question 15

Which of the following is a scalar quantity?

Accepted Answer

Mass

Question 16

At the beginning of each problem you should define what?

Accepted Answer

A coordinate system

Question 17

A book falls for 10 seconds. How far does it fall?

Accepted Answer

500 m

Question 18

Velocity equals what?

Accepted Answer

displacement/time

Question 19

A box that weighs 150-kg is being pushed with a force of 250N. What is the acceleration of the box?

Accepted Answer

1.67

Question 20

I throw a ball upwards with a velocity of 20m/s. How high will the ball go?

Accepted Answer

20m

Question 21

What is Cole's weight if he is sitting on a table at rest and there is a normal force of 120 N?

Accepted Answer

120 N

Question 22

A crate (m = 50kg) has a force = 70N applied to it. What is the acceleration?

Accepted Answer

1.4 m/s^2

Question 23

What does it mean when an object is in equilibrium?

Accepted Answer

It has no acceleration.

Question 24

If an object in free fall reaches terminal velocity, what is its acceleration?

Accepted Answer

0 m/s^2

Question 25

Who is the best teacher ever?

Accepted Answer

Dr. Shepherd

Question 26

What is weight?

Accepted Answer

Weight=(mass)(gravity)

Question 27

Why is it when we lean on a wall we do not fall through that wall

Accepted Answer

The wall exerts the same amount of force as you do

Question 28

Which of the following is NOT a vector?

Accepted Answer

Time

Question 29

If Dr. S dropped a book on my foot from rest at a height of 5 meters, how long does it take to hit my foot?

Accepted Answer

1 second

Question 30

What is the weight of a 40g (mass) object if g=9.8m/s^2?

Accepted Answer

0.392N

Question 31

What is the formula for normal force?

Accepted Answer

No formula

Question 32

Every object falls with the same _____?

Accepted Answer

acceleration

Question 33

Which of the following is NOT a type of force?

Accepted Answer

abnormal

Question 34

How long does it take a ball thrown initially up at 50 m/s to reach its highest point?

Accepted Answer

5 s

Question 35

What does FBD stand for?

Accepted Answer

Free Body Diagram

Question 36

What is 30 m/s in mi/hr? 1 mi = 1600 km and 1hr = 3600s.

Accepted Answer

67.5

Question 37

What is inertia?

Accepted Answer

an object's resistance to change

Question 38

what is the equation to find force

Accepted Answer

mass times acceleration

Question 39

What does the winner of this Quiz get?

Accepted Answer

Bonus Points

Question 40

Is the Normal Force always equal to the weight of an object?

Accepted Answer

no

Question 41

What is friction attributed to?

Accepted Answer

The irregularity between surfaces in contact

Question 42

Which is not an SI unit?

Accepted Answer

yard

Question 43

Which of the following is a vector quantity?

Accepted Answer

Force

1st 9 Weeks Review

Questions 43

1st 9 Weeks Review

Questions 43