1. TRUE-For example, displacement, velocity, and acceleration are vector quantities, while speed (the magnitude of velocity), time, and mass are scalars. To qualify as a vector, a quantity having magnitude and direction must also obey certain rules of combination.

2. TRUE-Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.

3. TRUE-Acceleration, rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down. Motion on a circle is accelerated even if the speed is constant, because the direction is continually changing.

4. FALSE-L T−2. The SI unit of acceleration is the metre per second squared (m s−2); or "metre per second per second", as the velocity in metres per second changes by the acceleration value, every second.

5. FALSE-The only two ways to accelerate is by changing the speed or change in direction or change both. It is a vector quantity. If the velocity of the object increases with time, its acceleration increases. If the velocity of an object decreases with time, its acceleration is negative.

#CarryOnLearning

Answer:

1. True - acceleration is an example of a vector quantity
2. True - when an object changes direction without changing its speed,it is accelerating
3. True - Acceleration is defined as the rate of change of speed
4. False - because SI defines as the metre per ensuing forum.
5. False - because when speed increases with time it only increases entity.

Explanation:

#CarryOnlearning