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Motion in Straight Line
Question
Wired Faculty App

A player throws a ball upwards with an initial speed of 29.4 m/s. Choose x = 0 m and t = 0 s to be the location and time of the ball at its highest point, vertically downward direction to be the positive direction of X-axis, then give the signs of position, velocity and acceleration of the ball during its upward and downward motion.

Answer

 

  During downward motion During upward motion
Position Positive Positive
Velocity Positive Negative
Acceleration positive Positive

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Some More Questions From Motion in Straight Line Chapter

What is rest?

What is motion?

Is absolute rest or absolute motion possible?

What is the most essential thing to study the motion of a body?

Can a body be always at rest in some frame?

Can a body be in motion in the frame associated with the body itself?

When an object in motion can be considered as particle or point object?

Can you think of physical phenomena involving the moon in which moon cannot be treated as particle?

A train is crossing the bridge. Can it be taken as a particle?

Can a train be taken a particle? Give an example in support of your answer.