Energy - Forces doing work and Forces and their effects

Question 1

What is the equation that links Work Done, Force and Distance?

Answer 1

Work done (J) = Force (N) x Distance moved in the direction of the force (m)

Question 2

Energy transferred by a force is also known as…?

Answer 2

Work done

Question 3

What is the unit for Work done?

Answer 3

Work done is Energy transferred, so is measured in Joules (J)

Question 4

What is the unit for Power?

Answer 4

Watts (W)

Question 5

The rate at which energy is transferred is also known as…?

Answer 5

Power

Question 6

What is the equation that links Power, Work done (or Energy transferred) and time taken?

Answer 6

Power (W) = Work done (J)/time taken(s)

P=E/t

Question 7

Gravity and Magnetism both cause what type of force?

Answer 7

Non contact forces

Question 8

Friction and upthrust are both examples of what type of force?

Answer 8

Contact forces

Question 9

The space around an object where it can affect other objects is known as a force ______.

Answer 9

Field

Question 10

There are two methods for finding resultant force using Vector diagrams - what are they?

Answer 10

1) Parallelogram method
2) Tip-to-Tail method

Question 11

What is a free body force diagram?

Answer 11

A diagram showing all the forces acting on a single object. The arrows represent force vectors - the direction of the arrow shows the direction of the force and the length of the arrow represents its size.

Question 12

We can resolve a force into its horizontal and vertical _________.

Answer 12

Components