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Would a merry go round have a changing velocity?
Yes, a merry-go-round would have a changing velocity because it is constantly changing direction as it rotates. The velocity of an object includes both speed and direction, so as the merry-go-round spins, its velocity is constantly changing.
Can you go around a curve with constant velocity?
Yes, it is. Trajectory also depends of direction of acceleration, not only it's magnitude. When you consider circular orbit, the agnitude of centripetal acceleration is constant, but the vector directions changes every moment to point constantly at the center.
Does it an acceleration if you go around a corner on bycicle?
Yes, when you go around a corner on a bicycle, you are changing your direction of motion, which requires centripetal acceleration towards the center of the curve. This acceleration allows you to turn without skidding off the curve.
A merry-go-round horse moves at a constant speed but at a changing?
. . . velocity, because one of the components of velocityis the direction of the speed.
How can you accelerate if your speed does not change?
A change in the vector or direction that you are traveling is considered an acceleration; even if you don't change speed. This would be the case for going around in a merry-go-round, e.g. You are accelerating (changing direction), but the speed is constant (velocity is changing).
Why is a person running around a circular track at a constant speed accelerating?
Even though the person is moving at a constant speed, they are changing direction constantly as they go around the track. Since acceleration is defined as any change in velocity, and velocity includes both speed and direction, the person running on a circular track is experiencing acceleration.
Why do cars running very fast in a curve road tend to move out of the road in a path tangential to the curve road?
Velocity is a vector, meaning that along with the measurement of speed in meters/second, it also needs a direction. If a car was driving North at 10ms-1 that would be its velocity at that point. The car then turns left so it's travelling west at 10ms-1. The car's velocity has changed, therefore there must have been some acceleration for the car's velocity to have changed. That acceleration is always towards the middle of the circle that it is turning
What is the differnce between velocity and speed?
Velocity is a vector quantity. So direction is important But speed is a scalar. Body moving around a circle may go with uniform speed but not with uniform velocity as direction is changing continuously
What might happen if you understeer going around a curve?
You may go off the road.
Driving around a curve what way the car want to go?
A curve to the left, the vehicle would go to the right with no steering. A curve to the right, the vehicle would go left with no steering. Because any object in motion will continue to go straight unless another force takes it in another direction.
Can a body posses velocity when its accleration is zero?
Of course. You need to go back and review the definitions of those terms. Acceleration is the rate at which velocity changes. If velocity is not changing, then there is no acceleration. But the velocity doesn't have to be zero just because it's not changing. Velocity is the speed of an object and the direction in which it's moving. If it's moving at a constant speed in a straight line, then it has plenty of velocity. But since the speed isn't changing and the direction isn't changing, there's no acceleration. If acceleration comes along somehow ... such as by igniting a rocket motor, or gravity pulling the object downward, or someone reaching out and giving the object a push, then the speed or direction may change, and that'll be a change of velocity.
Why is a particle in uniform circular motion not moving at a constant velocity?
No. Velocity has direction and magnitude. The magnitude can be constant, but if the body is in circular motion, the direction of the movement is constantly changing, which means that the velocity is constantly changing. Changing velocity means that the body is accelerating. In this case, because the motion of the body is always changing away from a straight line to cause it to go round the circle, the acceleration acts towards the centre of the circle.
