Which statement is true for an object which is travelling through a fluid?
0%
The slower an object moves, the greater the frictional force that acts upon it
0%
The frictional force on an object moving through a fluid remains constant regardless of the speed at which the object moves through the fluid
0%
The faster an object moves, the greater the frictional force that acts upon it
0%
After an object reaches a certain speed, whilst travelling through a liquid, the frictional force acting upon it becomes zero
Q.2.
Which formula correctly relates the weight of an object and the force exerted on it by gravity?
0%
W = 2 x m x g
0%
W = m x g
0%
W = 2g
0%
G = W x m
Q.3.
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 centre that she has a mass of 72 kg. What is the strength of gravity on this new planet?
0%
3.3 N/kg
0%
5.56 N/kg
0%
7.89 N/kg
0%
12.23 N/kg
Q.4.
Why does a parachute reduce a parachutist's terminal velocity?
0%
It decreases the force of gravity exerted on the parachutist and hence reduces the parachutist's terminal velocity
0%
It decreases the amount of air resistance exerted on the parachutist and hence reduces the parachutist's terminal velocity
0%
It increases the amount of air resistance exerted on the parachutist and hence reduces the parachutist's terminal velocity
0%
It increases the force of gravity exerted on the parachutist and hence reduces the parachutist's terminal velocity
Q.5.
What could a horizontal line on a velocity-time graph indicate?
0%
An object has reached terminal velocity
0%
An object is accelerating
0%
An object is decelerating
0%
An object has changed direction
Q.6.
If an object is placed into a fluid and released on Earth, what will initially happen to the object?
0%
Accelerate
0%
Decelerate
0%
Move at a constant velocity
0%
None of the above
Q.7.
What is weight measured in?
0%
Kilograms
0%
Newtons
0%
Grams
0%
Metres
Q.8.
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?
0%
Initial velocity
0%
Terminal velocity
0%
Final velocity
0%
Light speed
Q.9.
What is the weight of a person on Earth if their mass is 65 kg?
0%
500 N
0%
650 N
0%
750 N
0%
850 N
Q.10.
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?
0%
6.5 N
0%
25 N
0%
65 N
0%
108 N
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.