Forces and Acceleration

Question 1

All objects need a [ ] to start moving

Answer 1

Force

Question 2

If the [ ] force on a stationary object is zero…

Answer 2

Resultant

The object will remain stationary

Question 3

No resultant force = no change in [ ]

Answer 3

velocity

Question 4

If there is no resultant force on a moving object…

Answer 4

it’ll just carry on moving at the same velocity

Question 5

When something is moving at a constant velocity then the forces must be …

Answer 5

balanced

Question 6

If there is a non-zero resultant force…

Answer 6

then the object will accelerate in the direction of the force

Question 7

What 5 forms can ‘acceleration’ take as a result of a resultant force?

Answer 7

Starting, Stopping
Speeding up, Slowing down
Changing direction

Question 8

If there is a resultant force, on a diagram the arrows will be [ ]

Answer 8

Unequal

Question 9

What is the equation for acceleration? What does each bit mean? Units?

Answer 9

a = F/m
a = acceleration (m/s²)
F = Resultant force (Newtons N)
m = Mass (kg)

Question 10

When two objects interact, the forces they exert on each other are [ ].

Answer 10

Equal and opposite.