Question

Part one: Multiple choices

Answer 1

Answer:

1)

a) in the state of rest with respect to surroundings of the compartment,

2)

b) periodic motion

3)

a) moving car in a straight line

4)

d) velocity

5)

b) velocity decrease

6)

b) increases

7)

d) acceleration

8)

10 m/s

9)

b) average velocity

10)

b) instantaneous velocity

11)

a) 439.6 m

Explanation:

1)

With respect to the inside surrounding the person will be at rest. Because the person is not moving inside the compartment.

2)

The vibration motion follows periodic motion.

3)

The car moving in a straight line is an example of rectilinear motion and its wheels are in rotational motion. They are not in periodic motion.

4)

Definition of velocity.

5)

Acceleration is the rate of change of velocity. So negative acceleration means a decrease in velocity.

6)

Acceleration is the rate of change of velocity. So an increase in velocity means an increase in acceleration.

7)

Definition of acceleration.

8)

$velocity = \frac{Distance}{Time}\\\\velocty = \frac{600\ m}{1\ min}\frac{1\ min}{60\ s}\\\\velocity = 10\ m/s$

Hence, none of the options is correct. The correct answer is 10 m/s.

9)

Definition of average velocity.

10)

Definition of instantaneous velocity.

11)

$Displacement = Circumference = \pi d\\Displacement = \pi(140\ m)\\Displacement = 439.6\ m$