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.
Two blocks hit the ground simultaneously because they have the same acceleration
Two blocks reach the ground at the same time because their dimensions are the same
Wooden block being lighter than the steel block reaches the ground first
Steel block reaches the ground first because it is denser than the wooden block
Steel block takes half as much time as the wooden block to reach the ground because it is more massive than the wooden block
Correct answer is A
An object falling without air resistance or friction is defined to be in free-fall.
The acceleration of free-falling objects is therefore called the acceleration due to gravity.
It is because the acceleration due to gravity is constant for all objects regardless of the mass, neglecting air resistance.
17.3\(ms^{-2}\)
20\(ms^{-2}\)
24.5\(ms^{-2}\)
125\(ms^{-2}\)
200\(ms^{-2}\)
Correct answer is B
\(v^2=u^2 +2as =0 +2\times(25-5)\\ v^2 =0+20\times 20=400;v =\sqrt{400}= 20(ms^{-2}\)
0.8rad\(s^{-1}\)
2 rad\(s^{-1}\)
4 rad\(s^{-1}\)
8 rad\(s^{-1}\)
16 rad\(s^{-1}\)
Correct answer is C
V=rw, 8=2w, w=8/2= 4rad/s
0\(cm^3\)
9\(cm^3\)
10\(cm^3\)
90\(cm^3\)
100\(cm^3\)
Correct answer is C
V = \(\frac{m}{p} \, ice volume= 90 cm^3;water volume =100 cm^3\\
Volume change = (100-90) cm^3= 10 cm^3\)
0.02N
0.08N
0.20N
0.80N
1N
Correct answer is D
Upthrust = weight of the water displaced =pvg= 1000 x 2 x \(10^{-5}\)=0.20N \\ Apparent weight = weight in air – upthrust = 1-0.2N=0.8N