Science Bellwork Study Guide 2

Question 1

You push 5 newtons left and your friend pushes 4 newtons in the same direction. What is the net force?

Answer 1

9 Newtons Left

Question 2

SI Unit for force is…..

Answer 2

Newton

Question 3

What causes an object to move?

Answer 3

Force

Question 4

Balanced forces have a net force of….

Answer 4

0 Newtons

Question 5

2 things that affect friction

Answer 5

• How smooth or rough something is
• Weight

Question 6

Force 25 N acts on an object 12 kg. Calculate Acceleration.

Answer 6

2.5 m/s^2

Question 7

Mass of object with a force 88N & acceleration of 12 m/s^2?

Answer 7

7.3 kg

Question 8

A ball thrown with no gravity or resistance would go in the same direction at the same speed unless acted. Which law?

Answer 8

Newton’s First Law of Motion

Question 9

Which of the following are balanced forces?

A. Stretched Band
B. Ball Falling
C. Holding Heavy Box
D. Crash between truck & car

Answer 9

A

Question 10

State Newton’s 3rd Law of Motion and provide an example.

Answer 10

Every action has an equal opposite reaction.

Balloon going up and the air in it going down.

Question 11

Which of the phrases doesn’t follow the 3rd Law of Motion?

A. Deer pushing off the ground and going in the air.
B. The beachball sitting on the sand.
C. Fish fins pushing forward and water pushing back.
D. Paddle moves back and the boat moves forward.

Answer 11

B

Question 12

You sit on the chair and the chair pushes up on you with a force of 800 N. How many newtons do you push down?

Answer 12

800 N