First off, you need to review the formula for momentum:
Momentum = (mass) times (speed)
= (75 kg) x (18 m/s)
= 1,350 kg-m/s .
There it is. That's all there is to it.
Notice that you would have been sunk without knowing
the equation for momentum. It's pretty important. You
should memorize it. You'll need it again.
The distance between one crest and the second
The magnitude of the acceleration in the y-direction is ![9.8 m/s^2](https://tex.z-dn.net/?f=9.8%20m%2Fs%5E2)
Explanation:
When a projectile is fired into the air, there is only one force acting on it (neglecting air resistance): the force of gravity, which pulls the projectile downward with a force of
F = mg
where m is the mass of the projectile and
is the magnitude of the acceleration of gravity. This force acts along the y-direction, downward.
Since there are no other forces acting, therefore, the motion of the projectile consists of two separate motions:
- A uniform motion along the x-direction, with constant velocity
- A uniformly accelerated motion along the y-direction, with constant acceleration (
)
So, the magnitude of the acceleration in the y-direction is
.
Learn more about projectile motion:
brainly.com/question/8751410
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