Answer:
.5m per second to the west
Explanation:
distance divided by time
<span>a region around a magnetic material or a moving electric charge within which the force of magnetism acts.</span>
(a) Considering that they are travelling at the same velocity (100 km/h) and that they are of the same mass, they have equal kinetic energy.
(a.2) Kinetic energy is the form of energy associated with the movement of objects that have mass. (b) Power is work over time, and it can be calculated at any given moment by multiplying force times velocity. In this case, since the red car takes less time to accelerate to the same final velocity as the blue car, the force on the red car must be greater. While the cars are both accelerating, the red car must also have a greater velocity at any given moment since it is being acted upon by a greater force. Therefore, the value of force times velocity while the cars are accelerating is greater for the red car, and you can say that the red car has greater power. The critical assumption that I made in my reasoning is that acceleration is constant.
Answer:
The kinetic energy of the clam at a height of 5.0 m is 5.19 J and the speed of the clam at that height is 9.71 m/s.
<u>Explanation:
</u>
<em>Mechanical energy is constant throughout the travel</em>, we know that <em>mechanical energy is calculated by adding potential energy and kinetic energy</em>. Potential energy = ,
Kinetic energy = and Mechanical energy = Kinetic energy is zero at initial point. Now mechanical energy of clam with m=0.11kg,g=9.81,h=9.8 m is = 0.11×9.81×9.8 = 10.58 J.
Mechanical energy of clam at a height of 5.0 m = =. We know that mechanical energy is constant hence, <em>mechanical energy of clam at height 9.8 m is equal to mechanical energy at height 5.0 m</em>. This is represented as following
10.58 = 10.58 – 5.39 = 5.19 = kinetic energy of the clam is 5.19 J.
Now speed of the clam at height 5.0 m is 5.19 = 94.36 = = 9.71 m/s. The speed of the clam is 9.71 m/s.