Give reasons for the following:
1. Motion of the wheels of a moving car is a multiple motion.
2. Rotation of the moon around the Earth is a periodic motion.
3. A particle rotating in a circle may have constant speed but its velocity changes continuously.
4.)We weigh more at sea level than on top of a high mountain.
Answers
Answer:
1.because when we want to stop our car that time it is in rest. when we want to start our car it will again be in motion. therefore wheels of the car is multiple motion.31-Aug-2019
2.Rotation of moon around the earth repeats after regular intervals of time hence it is a periodic motion
3.When a particle is under uniform circular motion, its direction of motion continuously changes, hence the magnitude of its velocity remains constant while its direction changes.
4.You would weigh very slightly more at sea level than at the top of a mountain, not enough for you to notice, but a measurable amount. Weight, which really means gravitational force, is proportional to the product of the masses of two objects acting on each other, in this case the giant earth and the minuscule you.