Q.1
What could a horizontal line on a velocity-time graph indicate?
  • An object has reached terminal velocity
  • An object is accelerating
  • An object is decelerating
  • An object has changed direction
Q.2
The gravity on the moon is 1/6 of the force due to gravity on the Earth. What is the weight of a person on the moon who has a mass of 65 kg?
  • 6.5 N
  • 25 N
  • 65 N
  • 108 N
Q.3
What is the speed of an object known as when the force due to gravity and the frictional forces acting on the object are equal?
  • Initial velocity
  • Terminal velocity
  • Final velocity
  • Light speed
Q.4
If an object is placed into a fluid and released on Earth, what will initially happen to the object?
  • Accelerate
  • Decelerate
  • Move at a constant velocity
  • None of the above
Q.5
Which statement is true for an object which is traveling through a fluid?
  • The slower an object moves, the greater the frictional force that acts upon it
  • The frictional force on an object moving through a fluid remains constant regardless of the speed at which the object moves through the fluid
  • The faster an object moves, the greater the frictional force that acts upon it
  • After an object reaches a certain speed, whilst traveling through a liquid, the frictional force acting upon it becomes zero
Q.6
An astronaut travels to another planet. On this planet she records that she has a weight of 400 N. She knows from measurements back at the space center that she has a mass of 72 kg. What is the strength of gravity on this new planet?
  • 3.3 N/kg
  • 5.56 N/kg
  • 7.89 N/kg
  • 12.23 N/kg
Q.7
Why does a parachute reduce a parachutist's terminal velocity?
  • It decreases the force of gravity exerted on the parachutist and hence reduces the parachutist's terminal velocity
  • It decreases the amount of air resistance exerted on the parachutist and hence reduces the parachutist's terminal velocity
  • It increases the amount of air resistance exerted on the parachutist and hence reduces the parachutist's terminal velocity
  • It increases the force of gravity exerted on the parachutist and hence reduces the parachutist's terminal velocity
Q.8
What is weight measured in?
  • Kilograms
  • Newtons
  • Grams
  • Metres
Q.9
What is the weight of a person on Earth if their mass is 65 kg?
  • 500 N
  • 650 N
  • 750 N
  • 850 N
Q.10
Which formula correctly relates the weight of an object and the force exerted on it by gravity?
  • W = 2 x m x g
  • W = m x g
  • W = 2g
  • G = W x m
0 h : 0 m : 1 s