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.
0.8Ns
1.2Ns
12.0Ns
80.0Ns
Correct answer is B
Initial momentum = 0.1 x 10 = 1Ns
final velocity = -2ms-1
Final momentum = -2 x 0.1 = -0.2Ns
Change in momentum = -0.2 - 1 = -1.2Ns
An object moves with uniform speed round a circle. Its acceleration has
constant magnitude and constant direction
constant magnitude and varying direction
varying magnitude but constant direction
varying magnitude and varying direction
Correct answer is B
No explanation has been provided for this answer.
60m
80m
100m
120m
Correct answer is A
Time from tower to top, t = \(\frac{u - v}{g}\)
= \(\frac{20 - 0}{10}\)
= 2s
distance from tower to top
x = ut - \(\frac{1}{2}\)gt2
= (20 x 2) - (\(\frac{1}{2}\) x 10 x 2 x 2)
= 20m
Time from the top to the ground, t = 6 - 2
= 4s
distance from top to ground,
x = ut - \(\frac{1}{2}\)gt2
= (0 x 4) + (\(\frac{1}{2}\) x 10 x 4 x 4)
= 80cm
therefore, height of tower = 80 - 20
= 60m
W sin\(\theta\)
W cos\(\theta\)
W sec\(\theta\)
W tan\(\theta\)
Correct answer is A
horizontal component = W cos(90o - \(\theta\))
= W sin
Which of the following is the most suitable for use as an altimeter?
A mecury barometer
A fortin barometer
A mecury manometer
An aneroid barometer
Correct answer is D
No explanation has been provided for this answer.