1.
Which of the following quantities have both magnitude and direction?
I. Displacement
II. Speed
III. Momentum
I and II only
I and III only
II and III only
I , II and III
2.
An athlete weighs 750 N. Determine the athlete's mass.
[g = 10 m s-2]
750 kg
375 kg
75 kg
7500 kg
3.
A body is more stable when its centre of gravity is
at the centre.
at its top.
outside the body.
close to the ground.
4.
The principle of flotation states that
a floating body displaces its own weight of fluid in which it floats.
a floating body experiences an upward force equal to its weight.
a body immersed in a fluid does not displace the fluid.
the upthrust on a floating body exceeds the body's weight.
5.
A body has a weight of 720 N. Calculate the mass of the body
[g = 10 ms-2]
7.2 kg
72 kg
720 kg
7200 kg
6.
Which of the following forces is mainly reduced when a lubricant is applied to the moving parts of an engine?
Gravitational force
Magnetic force
Frictional force
Centripetal force
7.
A car of mass 1600 kg moves with a velocity of 80 ms-1.
Determine the momentum of the car.
1.28 x 106 kg ms-1
3.2 x 104 kg ms-1
6.4 x 104 kg ms-1
1.28 x 105 kg ms-1
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