Q. No.A body of mass \(2~\text{kg}\) moving with velocity of \(\vec{v_{in}}=(3\hat{i}+4 \hat{j})~\text{m/s}\) enters into a constant force field of \(6 ~\text N\) directed along positive \(z\text-\)axis. If the body remains in the field for a period of \(\dfrac{5}{3}\) seconds, then velocity of the body when it emerges from force field is:
1. \((4 \hat{\imath}+3 \hat{\jmath}+5 \hat{k})~\text{m/s}\)
2. \((3 \hat{\imath}+4 \hat{\jmath}+5 \hat{k})~\text{m/s}\)
3. \((3 \hat{\imath}+4 \hat{\jmath}-5 \hat{k})~\text{m/s}\)
4. \((3 \hat{\imath}+4 \hat{\jmath}+\sqrt{5} \hat{k} )~\text{m/s}\)
1. \((4 \hat{\imath}+3 \hat{\jmath}+5 \hat{k})~\text{m/s}\)
2. \((3 \hat{\imath}+4 \hat{\jmath}+5 \hat{k})~\text{m/s}\)
3. \((3 \hat{\imath}+4 \hat{\jmath}-5 \hat{k})~\text{m/s}\)
4. \((3 \hat{\imath}+4 \hat{\jmath}+\sqrt{5} \hat{k} )~\text{m/s}\)
Subtopic: Newton's Laws |
82%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
An object with mass \(500~\text{g}\) moves along \(x\text-\)axis with speed \(v = 4\sqrt {x} ~\text{m/s.}\) The force acting on the object is:
1. \(4~\text{N}\)
2. \(6~\text{N}\)
3. \(8~\text{N}\)
4. \(5~\text{N}\)
1. \(4~\text{N}\)
2. \(6~\text{N}\)
3. \(8~\text{N}\)
4. \(5~\text{N}\)
Subtopic: Newton's Laws |
77%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
A player caught a cricket ball of mass \(\mathrm{150 ~g}\) moving at a speed of \(20 \mathrm{~m} / \mathrm{s}.\) If the catching process is completed in \(\mathrm{0.1 ~s ,}\) the magnitude of force exerted by the ball on the hand of the player is:
1. \(\mathrm{150 ~N}\)
2. \(\mathrm{3 ~N}\)
3. \(\mathrm{30~N}\)
4. \(\mathrm{300~N}\)
1. \(\mathrm{150 ~N}\)
2. \(\mathrm{3 ~N}\)
3. \(\mathrm{30~N}\)
4. \(\mathrm{300~N}\)
Subtopic: Newton's Laws |
82%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
A ball of mass \(120~\text{g}\) moving with initial velocity \(25~\text{m/s}\) is stopped by an external force \({F}\) in \(0.1\) second. Then the value of force is: (in Newton)
1. \(60~\text{N}\)
2. \(40~\text{N}\)
3. \(100~\text{N}\)
4. \(30~\text{N}\)
1. \(60~\text{N}\)
2. \(40~\text{N}\)
3. \(100~\text{N}\)
4. \(30~\text{N}\)
Subtopic: Newton's Laws |
88%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
A ball released from a height \(10 ~\text{m}\) strikes the ground and rebounds at the height of \(5 ~\text{m}.\) Then the impulse imparted by the ground while collision (given the mass of the ball is \(100~\text g\)) is:
(Take \(g=10~\text{m/s}^2 )\)
1. \((\sqrt2-1)~\text{N-s}\)
2. \((\sqrt2+2)~\text{N-s}\)
3. \((2\sqrt2-1)~\text{N-s } \)
4. \((\sqrt2+1)~\text{N-s } \)
(Take \(g=10~\text{m/s}^2 )\)
1. \((\sqrt2-1)~\text{N-s}\)
2. \((\sqrt2+2)~\text{N-s}\)
3. \((2\sqrt2-1)~\text{N-s } \)
4. \((\sqrt2+1)~\text{N-s } \)
Subtopic: Newton's Laws |
76%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
A block of mass \(20~\text{kg}\) is placed on a rough surface having coefficient of friction \(0.04\) as shown in the figure. Find the acceleration of the system when it is released.
1. \(3~\text{m/s}\)
2. \(2~\text{m/s}\)
3. \(1~\text{m/s}\)
4. \(4~\text{m/s}\)
1. \(3~\text{m/s}\)
2. \(2~\text{m/s}\)
3. \(1~\text{m/s}\)
4. \(4~\text{m/s}\)
Subtopic: Newton's Laws |
96%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
An artillery gun of mass \(M_1\) fires a shell of mass \(M_2. \) Assuming no external force acts on the system, what is the ratio of the kinetic energy of the artillery to that of the shell at the instant of firing?
| 1. | \(\dfrac{M_2}{M_1}\) | 2. | \(\dfrac{M_1+M_2}{M_1}\) |
| 3. | \(\dfrac{M_1+M_2}{M_2}\) | 4. | \(\dfrac{M_1}{M_1+M_2}\) |
Subtopic: Newton's Laws |
57%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
In the system shown below, the pulley for string is ideal. If the acceleration of blocks is \( \frac{g}{8},\) then the ratio of their masses \( \frac{m_1}{m_2}\) is:
1. \( \dfrac{9}{7}\)
2. \(\dfrac{8}{7}\)
3. \(\dfrac{5}{7}\)
4. \( \dfrac{9}{8}\)
1. \( \dfrac{9}{7}\)
2. \(\dfrac{8}{7}\)
3. \(\dfrac{5}{7}\)
4. \( \dfrac{9}{8}\)
Subtopic: Newton's Laws |
89%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The normal force between the table and \(5~\text{kg}\) block as shown in the diagram is:
(take \(g=10~\text{m/s}^2\) )
1. \(306 ~\text N\)
2. \(303~\text N\)
3. \(296~\text N\)
4. \(297~\text N\)
(take \(g=10~\text{m/s}^2\) )
1. \(306 ~\text N\)
2. \(303~\text N\)
3. \(296~\text N\)
4. \(297~\text N\)
Subtopic: Newton's Laws |
69%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
A particle of mass \(500~\text{g}\) is moving with a velocity given by:
\(\vec{v}=(2 t \hat{i}+3 t^2 \hat{j})~ \text{m} / \text{s}.\)
If the force acting on the particle at \(t=1~\text{s}\) is \(\vec{F}=( \hat{i}+x \hat{j})~ \text{N},\) then the value of \(x\) is:
| 1. | \(6\) | 2. | \(1\) |
| 3. | \(2\) | 4. | \(3\) |
Subtopic: Newton's Laws |
77%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
© 2026 GoodEd Technologies Pvt. Ltd.