Tag: force and newton's laws of motion
Questions Related to force and newton's laws of motion
A force of 100 dynes acts on mass of 5 gm for 10 sec. The velocity produced is:
Jahnvi is walking at $1.63 m/s$. If she weighs $583 N$, what is the magnitude of her momentum?
The moment P (in $kg\, ms^{-1}$) of a particle is varying with time t (in second) as $p=2+3t^2$. The force acting on the particle at $t=3s$ will be
A homogeneous disc of mass 2 kg and radius 15 cm is rotating about its axis (which is fixed) with an angular velocity of 4 rad/s. The linear momentum of the disc is :
Which of the following must be true for the sum of the magnitude of the momenta of the individual particles in the system?
A force of $10 \,N$ acts on a body of mass $0.5 \,kg$ for $0.25 \,sec$ starting from rest. What is its momentum now?
A rocket is moving at a constant speed in space by burning its fuel and ejecting out the burnt gases through a nozzle.
A car of mass $600 kg$ is moving with a speed of $10 m s^{-1}$ while a scooter of mass $80 kg$ is moving with a speed of $50 m s^{-1}$. Compare their momentum.
What is the value of $p _1$ and $m _2$ ?
m (kg) | v (m/s) | p = mv (kgm/s) |
---|---|---|
85 | 60 | $p _1$ |
$m _2$ | 2.5 | 6.25 |
A bullet of mass $50 g$ moving with an initial velocity $100 m {s}^{-1}$, strikes a wooden block and comes to rest after penetrating a distance $2 cm$ in it. Calculate: (i) initial momentum of the bullet, (ii) final momentum of the bullet.