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.
1.1 x 10-5N
3.3 x 10-5N
3.0 x 10-4N
9.0 x 10-4N
Correct answer is D
F \(\alpha \frac{1}{r^2}\)
therefore, \(\frac{F_1}{F_2}\) = \(\frac{r_1}{(r_2)^2}\)
\(\frac{10^{-4}}{F_2}\) = \(\frac{(0.06)^2}{(0.18)^2}\)
F = 9 x 10-4N
3.0Ns
4.5Ns
7.5Ns
12.0Ns
Correct answer is D
Impulse = m(v-u)
= 0.15(50--30)
= 0.15 X 80
= 12N/s
5s
10s
12s
15s
Correct answer is A
In free fall, every object will reach the ground at same time
9√3ms-1 ·
6√3ms-1 ·
8√3ms-1 ·
9ms-1 ·
Correct answer is D
No explanation has been provided for this answer.
The physical quantity that has the same dimensions as impulse is
energy
momentum
surface tension
pressure
Correct answer is B
Impulse = F x t = m(v-u)