Answer:
The answer to your question is letter D.
Explanation:
In physics, mechanical work is the energy transferred by a force and its formula is Work = Force x distance.
Data given
Force = 90 N
Distance = 50 m
Work = ?
Substitution
Work = 90 N x 50 m
Simplification and result
Work = 4500 Nm = 4500 J
Answer:
Newton is the SI unit for force . Newton is kg m2
<span>The equation for momentum is p = mv, where m is the mass of the object and v is its velocity. Through conservation of momentum, we know that the momentum of the rifle must be of the same magnitude and opposite direction to that of the bullet. Thus we can form two expressions for the respective momenta, set them equal, and solve for the recoil speed of the rifle.
718*0.0159 = vr*5.05 where vr is the rifle recoil speed.
Solving for vr = 718*0.0159/5.05 = 2.26 meters/second.</span>
Answer:
The answer is C.
Explanation:
Let's take a glass of water as an example. Now, shine a flashlight on it. See it bend the light into a rainbow? That is a example of refraction. When the light enters the water, the water actually slows down and changes its direction, causing the light to come out the other side in a different way. Since water is very dense, it can bend the water and make it different.