1. Why is it impossible for a car (or any other object) to make aturn at a const
ID: 1663486 • Letter: 1
Question
1. Why is it impossible for a car (or any other object) to make aturn at a constant velocity? 1 Because in order to make a turn a car mustslow down. Because in order to make a turn a car mustbe moving and if something is moving then it isaccelerating. Because velocity is avector and vectors have both magnitude and direction. If a car isturning it's changing its direction hence its velocity isn'tconstant. Because friction and air drag are alwaysacting on the car. That is why you have to constantly press on theaccelerator to keep the car moving. If the car was moving atconstant velocity you wouldn't have to press on theaccelerator. It is possible for a car to make a turn ata constant velocity because velocity is a scalar and scalars don'tdepend on direction. As long as the speed doesn't change then thevelocity doesn't change.1 Because in order to make a turn a car mustslow down. Because in order to make a turn a car mustbe moving and if something is moving then it isaccelerating. Because velocity is avector and vectors have both magnitude and direction. If a car isturning it's changing its direction hence its velocity isn'tconstant. Because friction and air drag are alwaysacting on the car. That is why you have to constantly press on theaccelerator to keep the car moving. If the car was moving atconstant velocity you wouldn't have to press on theaccelerator. It is possible for a car to make a turn ata constant velocity because velocity is a scalar and scalars don'tdepend on direction. As long as the speed doesn't change then thevelocity doesn't change. 1 Because in order to make a turn a car mustslow down. Because in order to make a turn a car mustbe moving and if something is moving then it isaccelerating. Because velocity is avector and vectors have both magnitude and direction. If a car isturning it's changing its direction hence its velocity isn'tconstant. Because friction and air drag are alwaysacting on the car. That is why you have to constantly press on theaccelerator to keep the car moving. If the car was moving atconstant velocity you wouldn't have to press on theaccelerator. It is possible for a car to make a turn ata constant velocity because velocity is a scalar and scalars don'tdepend on direction. As long as the speed doesn't change then thevelocity doesn't change. 1
Explanation / Answer
The answer is the third one, (Because velocity is a vector and vectors have both magnitude and direction. If a car is turning it's changing its direction hence its velocity isn't constant). Basically, this is because if a car is moving 20 m/s to the east, then just 20m/s would be its speed, but once you add in the eastward direction, it becomes a velocity. So, if something has constant velocity, both its speed and direction would have to be constant (meaning it would be moving in a straight line). Thus, it cannot turn with constant velocity.
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