What is the direction of positive acceleration w.r.t. the velocity of a moving body?

A moving body is said to be decelerating if it is ____.

A moving body is said to be positively accelerating if it is ____.

Example : when person jumps off the height.

Which of the following remains constant during freefall?

Uniform circular motion is a/an ___ motion.

The SI unit of acceleration is ___.

The rate of change of ___ is called acceleration.

Selena is classifying different moving objects into two categories, i.e., rotational motion and periodic motion. She has the following motions to classify:
a. The motion of a swing
b. The motion of the Earth around the Sun
c. The motion of a giant wheel
d. The motion of the blades of a fan at a particular speed
e. The motion of the hands of a clock
f. The motion of a roller coaster
g. The motion of a merry-go-round
h. The motion of a pendulum
She could identify some of the above objects, which can be put in both categories. What are those?

A man is driving a car at a constant speed. What is the state of the man w.r.t. a person sitting inside the car?

A man is driving a car at a constant speed. What is the state of the man w.r.t. a tree on the road?

Pick the odd one out.

In a bowling game, what type of motion does the ball perform in the lane? What type of motion do the pins perform when hit by the ball?

Taking the traffic pole as a reference point, Sam observed the state of the passenger inside the yellow bus. He found that the passenger was in motion w.r.t. the traffic pole. What is the frame of reference in which this observation is made?

Which of the following motions repeat themselves after equal intervals of time?

1. The motion of the Moon around the Earth
2. The motion of the hour hand of a clock
3. The motion of a tennis ball during a match
4. The motion of a seesaw when children are playing

the motion of the moon around the earth and the motion of the hour hand of the clock is a periodic motion hence, they repeat themselves after equal intervals of time.