A body of mass 2 ,kg is sliding with a constant velocity of 4 ,m / s on a frictionless horizontal ta

English

Gujarati

Hindi

4-1.Newton's Laws of Motion

easy

A body of mass $2 \,kg$ is sliding with a constant velocity of $4 \,m / s$ on a frictionless horizontal table. The force required to keep the body moving with the same velocity is ..........$N$

A

$8$

B

$0$

C

$2 \times 10^4$

D

$\frac{1}{2}$

Solution

(b)

For constant velocity, no force is required so $\vec{F}=0$

Standard 11

Physics

Share

Similar Questions

A body of mass $4 \mathrm{~kg}$ experiences two forces $\overrightarrow{\mathrm{F}}_1=5 \hat{\mathrm{i}}+8 \hat{\mathrm{j}}+7 \hat{\mathrm{k}}$ and $\overrightarrow{\mathrm{F}}_2=3 \hat{\mathrm{i}}-4 \hat{\mathrm{j}}-3 \hat{\mathrm{k}}$. The acceleration acting on the body is :

medium

(JEE MAIN-2024)

A bullet of mass $0.04\; kg$ moving with a speed of $90\; m/ s$ enters a heavy wooden block and is stopped after a distance of $60\; cm$. What is the average resistive force exerted by the block on the bullet?

medium

A $10 g$ bullet moving at $200 \,m / s$ stops after penetrating $5 \,cm$ of wooden plank. The average force exerted on the bullet will be ………. $N$

easy

A stream of water flowing horizontally with a speed of $15\; m s^{-1}$ gushes out of a tube of cross-sectional area $10^{-2}\; m^2$, and hits a vertical wall nearby. What is the force in $N$ exerted on the wall by the impact of water, assuming it does not rebound ?

medium

A body of mass $ 2 \,kg$ is moving with a velocity $8\, m/s$ on a smooth surface. If it is to be brought to rest in $4 \,seconds$, then the force to be applied is ……… $N$

easy