Answer:
1. C
2.C
3. A
4. D
5.D
6.A
7.A
8.A
9.B
10.D
Explanation:
1. Acceleration is defined as the change in the velocity vector in a time interval, divided by the time interval.
2. 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
3. 7m/s2
4.8m/s
5. Distance is equal to the sum of individual distance traveled
6. speedometer, instrument that indicates the speed of a vehicle, usually combined with a device known as an odometer that records the distance traveled
7. The general speed average formula for an object is given as [Average Speed = Total Distance Traveled ÷ Total Time Taken]. SI unit of average speed is m/s.
8. In fact, the velocity is changing by a constant amount - 10 m/s - in each second of time. Anytime an object's velocity is changing, the object is said to be accelerating; it has an acceleration.
9.Acceleration is found by change in velocity over change in time. Since velocity is a vector (not scalar) quantity, it has both a magnitude AND a direction. Since the direction the car is travelling in is constantly changing around the bend (it's not travelling in a straight line), the velocity is technically changing
10. it's all correct
hope it helps
