Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
0.5 msec-1
1.5 msec-1
1 msec-1
2 msec-1
4 msec-1
Correct answer is C
Gun momentum = bullet momentum
5 x v = 0.05 x 100
v = 1 msec-1
An ice cube floats in a glass of water filled to the brim. What happens when the ice melts?
The water level remains the same
there is a drop in the level of water in the glass due to condensation on its outside
the water in the glass overflows
the level of water drops because melted ice occupies less volume
none of the above is correct
Correct answer is A
The law of flotation states that a floating object displaces its own weight of the fluid in which it floats. This implies that no extra volume of water is added as the ice melts.
A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain?
60
6
6 x 10-2
6 x 10-3
0.6
Correct answer is C
Strain = \(\frac{\Delta L}{L}\)
Extension produced = 6mm or 0.6cm
Original length = 10cm
= \(\frac{0.6}{10}\)
= 0.06 or 6 x 10\(^{-2}\)
9s
4.5s
6s
7.5s
3s
Correct answer is E
Using the equation of motion
S = ut + \(\frac{1}{2}\)at2
45 = (0 x t) + (\(\frac{1}{2}\) x 10 x t2)
t = 3s
838m
3350m
670m
1675m
67m
Correct answer is D
Distance covered = speed x time
= 335 x 5
= 1675m