can an object have a varying speed if its velocity is constant? if yes, give examples?

Answer 1

Velocity is a vector i.e. speed and direction so theoretically if a car headed West on a straight road with a lot of hills and valleys on it at a constant velocity of 50mph west then its speed could change as it went up and down the bumps.

Answer 2

No, the velocity is a vector quantity. To say the velocity is constant implies that both is magnitude (speed) and direction are a constant. On the contrary, you can have varying velocity with a constant speed because a constant speed implies that only the magnitude of the velocity vector is fixed. this is the case that the guy above mentions, going up and down hills...if your speedometer stays the same as you go up and down your speed is fixed but your velocity vector is not. Same thing on a racetrack, you might maintain the same speed but your direction is always changing as you turn.

Answer 3

No. Velocity is a vector quantity defined by speed and direction. If you change the speed, the velocity is necessarily changed regardless of what you do to the direction. You could maintain one component of the velocity constant while varying the speed, but the total velocity would be changing.

Answer 4

No.It can have varying velocity with constant speed as velocity is a vector which can change direction without changing modulus

Answer 5

Speed is a measure of magnitude. Velocity is a measure of speed and direction. If you change speed, you automatically change velocity. However, as stated before, purely theoretically. If you were to change speed as well as direction proportionally, you may be able to keep velocity constant.

Answer 6

No, but you can keep the speed the same but vary the direction of the vector.