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Newton's Laws of Motion Solved Problems
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>
Physics
> Newton's Laws of Motion
Which problem do you want to solve ?
A force of `200` `N` acts on a mass of `2` `kg`. What is the acceleration?
A car of mass `600` `kg` travelling at `72` `km`/`h` is brought to rest in `54` `m` after the driver sees an obstruction ahead. If the distance travelled after the driver has applies the brakes is `40` `m`, find the driver's reaction time and the braking force.
A spacecraft of mass `1200` `kg` is near the surface of a planet where the acceleration due to gravity is `2.0` `m`/`s^2`. What force must its rockets exert if the spacecraft is:
to descend at a steady velocit?
to accelerate away from the planet at `3.0` `m`/`s^2` ?
A constant force acts for `3` `s` on a mass of `16` `kg` and then ceases to act. During next three seconds the body covers `81` `m`. Find the magnitude of the force if the body was initially at rest.
A `1000` `kg` vehicle is moving with a velocity of `100` `m`/`s`. Calculate the magnitude of the force which can increase its velocity to `25` `m`/`s` in `5` `s`.
A cricket ball of mass `0.2` `kg` moving with a velocity of `20` `m`/`s` is brought to rest by a player in `0.1` `s`. Find the average force applied by the player and the impulse to the ball.
A machine gun of mass `10` `kg` fires `25` `g` bullets at the rate of `5` bullets per second with a speed of `500` `m`/`s`. What force in newton, must be applied to the gun to hold it in position?
Recommended Lessons
Which problem do you want to solve ?
A force of `200` `N` acts on a mass of `2` `kg`. What is the acceleration?
A car of mass `600` `kg` travelling at `72` `km`/`h` is brought to rest in `54` `m` after the driver sees an obstruction ahead. If the distance travelled after the driver has applies the brakes is `40` `m`, find the driver's reaction time and the braking force.
A spacecraft of mass `1200` `kg` is near the surface of a planet where the acceleration due to gravity is `2.0` `m`/`s^2`. What force must its rockets exert if the spacecraft is:
to descend at a steady velocit?
to accelerate away from the planet at `3.0` `m`/`s^2` ?
A constant force acts for `3` `s` on a mass of `16` `kg` and then ceases to act. During next three seconds the body covers `81` `m`. Find the magnitude of the force if the body was initially at rest.
A `1000` `kg` vehicle is moving with a velocity of `100` `m`/`s`. Calculate the magnitude of the force which can increase its velocity to `25` `m`/`s` in `5` `s`.
A cricket ball of mass `0.2` `kg` moving with a velocity of `20` `m`/`s` is brought to rest by a player in `0.1` `s`. Find the average force applied by the player and the impulse to the ball.
A machine gun of mass `10` `kg` fires `25` `g` bullets at the rate of `5` bullets per second with a speed of `500` `m`/`s`. What force in newton, must be applied to the gun to hold it in position?
Recommended Lessons