Forces

Question 0

Units of force

Answer 0

Newtons

Question 1

Resultant force

Answer 1

The total amount of force acting on an object

Question 2

Acceleration and force

Answer 2

Directionally proportional

Question 3

Gravity

Answer 3

Magnetic force which pulls an object to the ground

Question 4

Weight

Answer 4

Acts on an object because of gravity

Question 5

Equation linking force mass and acceleration

Answer 5

Force = mass x acceleration

Question 6

Equation linking gravity weight and mass

Answer 6

Weight = mass x gravity

Question 7

Friction

Answer 7

Objects resistance opposing motion

Question 8

Air resistance/drag

Answer 8

An object moving through the air experiences friction which opposes its movement

Question 9

Lift

Answer 9

The force that keeps an object in the air

Question 10

Upthrust

Answer 10

An upward force which acts upon an objection contradicting gravity

Question 11

Terminal velocity

Answer 11

The drag force has increased to the point where it is exactly balanced the weight and there is no unbalanced force

Question 12

When is there no resultant force

Answer 12

If an object is stationary or moving at a constant speed

Question 13

Unbalanced force

Answer 13

Net force- sum of all the forces

Question 14

Stopping distance

Answer 14

Thinking distance + braking distance

Question 15

How is terminal velocity reached

Answer 15

Free fall 
Parachutist opens parachute 
Air resistance due to increased SA
Weight remains constant 
Drag decreases to equal rate 
Terminal velocity reached