A man is carrying a trolley of mass 6kg and having K.E. of 40 J . Calculate its velocity with which he is running .
Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives the illusion of normal gravity during the flight. (a) If it starts from rest, how long will it take to acquire a speed one-tenth that of light, which travels at 3.0 × 108 m/s? (b) How far will it travel in so doing?
A kitten pushes a ball of yarn rolling toward it at 1.00 cm/s with its nose, displacing the ball of yarn 17.5 cm in the opposite direction in 2.00 s. What is the acceleration of the ball of yarn?
you measure that it takes 0.75 seconds for a leaf to fall from a tree to the ground. the leaf experiences air resistance as it falls. if there were no air resistance, how long would it take the leaf to fall?
You're conducting a physics experiment on another planet. You drop a rock from a height of 1 m and it hits the ground 0.4 seconds later. What is the acceleration due to gravity on this planet?
A 1.0 kg book is lifted 0.5 m above the table , but the table is 1.0 m above the floor , what would be the P.E of the book if the reference level where the floor ?
A ball of mass 2 kg is kept on the hill of height 3 km. Calculate the potential energy possessed by it ?How can I get the potential energy ?
Q1. In a 100m track event, the time taken by four runners is 10 sec., 10.2 sec., 10.4 sec and 10.6 sec. Find the ratio of their speed.
Q2. In a 4x100 m relay race, total track length is 200m and time taken by one particular group is 50.2 s. What is the average speed and average velocity of that group?
16. The spreading of sound waves around openings in barriers is called A. reverberation. B. an echo. C. diffraction. D. refraction.
in a 4*100m relay race,tota track length is 200m and time taken by one particular group is 50.2sec. ehat is the average speed and average velocity of that group?plzzzz help mee
