A person has a mass of 65 kg on Earth. What will their mass be on the Moon where g = 1.6 N/kg?
65 kg
104 N
40.6 kg
How do you calculate resultant force?
By dividing all the forces that act upon an object
By multiplying all the forces that act upon an object
By adding together all the forces that act upon an object
If you weigh 650 N on the Earth where g = 10 N/kg, how much will you weigh on Mars where g = 3.75 N/kg?
243.75 kg
243.75 N
650 N
What does Newton’s Second Law mean?
F = m × a
Action force = reaction force
Balanced forces cause terminal velocity
What is the unit of mass?
N
kg
kg.m/s
Find the resultant force that acts on a van of mass 2400 kg, if it accelerates at 3.5 m/s2.
0.0015 N
685.7 N
8,400 N
A car accelerates along a road. What happens to the air resistance or drag forces?
Nothing
The drag forces are reduced as it gets faster
The drag forces are increased as it gets faster
When the resultant force on an object is zero, which of the following could describe its motion?
It has constant acceleration
It has changing velocity
It has reached terminal velocity
A parachutist jumps out of a plane. Which of these statements correctly describes what happens to the forces that act on the person immediately after they leave the plane?
The down force gets less and the up force stays the same
The down force gets bigger and the up force also gets bigger
The down force stays the same and the up force increases
Newton's Second Law of Motion can be summarised by which equation?
M = F ÷ a
F = ma
F = m ÷ a