FORCES

LT#1: This affects how objects move.

• acceleration

• speed

• velocity

• force

LT#1: A stack of books are on a flat table and an unbalanced force is applied from the side. The books will...

• MOVE in the direction with the greatest net force

• MOVE in the direction of the force due to friction

• NOT MOVE due to gravity

• NOT MOVE because of friction

LT#1: Which of the following is FALSE (not true) about force?

• Forces act in pairs.

• Forces are measured in Newtons (N)

• Forces act in a particular direction.

• Forces and their effects are always seen.

LT#3: The sum of all forces acting on a object is known as...

• gravitational force

• applied force

• balanced force

• net force

LT#3: A racecar driver uses a parachute to slow down after a race. Calculate the net force.

• 3 N

• 7 N

• 10 N

• 17 N

LT#3: Two chonky cats are sitting on either ends of a see-saw that is not moving with a force of 200 N each. Calculate the net force.

• 0 N

• 100 N

• 200 N

• 400 N

LT#4: Which direction will the box move and with how much net force?

• 20 N to the right

• 12 N down

• 17 N to the right

• Not enough information to answer

LT#4: Which box will move down with 3 N of net force?

• Box A

• Box B

• Box C

• Box D

LT#4: Calculate the net force. Determine if it is balanced or unbalanced and which direction the box will move.

• 6 N; unbalanced; movement to the right

• 8 N; balanced; movement to the right

• 8 N; unbalanced; movement to the right

• 6 N; balanced; no movement

If F is force, k is spring constant and x is extension, Hooke's Law tells us that:

• F=k/x
• x=Fk
• k=Fx
• F=kx