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.
I, III and IV
I, II and IV
I, II and III
II, III and IV
Correct answer is B
No explanation has been provided for this answer.
5N
50N
95N
105N
Correct answer is D
Tension = Force of gravity + acceleration force
= mg + ma
\(a = \frac{v - u}{t}\)
= \(\frac{4 - 0}{8}\)
= 0.5 ms\(^{-2}\)
Tension = \(10 \times 10 + 10 \times 0.5\)
= 100 + 5
= 105N
1.50ms-1
1.00ms-1
0.86ms-1
0.65ms-1
Correct answer is C
Let the velocity of the boat = Vm/s
0.75/V = adj/hyp = Cos 30°
0.75/V = 0.8660
∴ V = 0.75/0.8660
V = 0.866 ms\(^{-1}\)
4.0 x 102N
2.0 x 103N
4.0 x 103N
4.0 x 104N
Correct answer is C
Work done = kinetic energy of the stone
\(\frac{1}{2} F e = \frac{1}{2} mv^2\)
Given m = 500g = 0.5kg; v = 40m/s ; e = 20cm = 0.2m
\(F = \frac{mv^2}{e}\)
= \(\frac{0.5 \times (40)^2}{0.2}\)
= 4.0 \(\times\) 10\(^3\) N
doubled
reduced to a quarter
reduced by half
constant
Correct answer is B
The Relation between Power, Force and Velocity is given by the relation:
P = F.V , this power is the product of force and velocity.