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A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds.
A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4seconds.
When a stone thrown directly upwards reaches the top, it: A. Velocity and acceleration are zero. B. The velocity is zero and the acceleration is about 10 m/s2. C. Velocity is about 10 m/s and acceleration is zero. D. The velocity is about 10 m/s and the acceleration remains the same.
Consider the following statements.
1. For a moving particle, distance can never be negative or zero while displacement can be.
2. The rate of displacement with time is called speed.
3. For a moving body the average velocity can never be negative or zero.
Which of the statements given above is/are correct?
A variable mass body with an initial mass of 5 kg is moving with a velocity of 5 m/s initially, after some time the velocity increases to 10 m/s, what is the new mass if the body is moving in the absence of any external force?
A variable mass body with an initial mass of 10 kg is moving with a velocity of 7 m/s initially, after some time the velocity increases to 14 m/s, what is the new mass if the body is moving in the absence of any external force?
A particle moving in a straight line with uniform acceleration has a velocity 10 cm/sec and 8 seconds later has a velocity 54 cm/sec. What will be the acceleration?
Which of the following is an equation of linear motion? (where, u and v = Initial and final velocity of the body, a = Acceleration of the body and s = Displacement of the body in time t seconds.)
Which of the following is an equation of linear motion?
(where, u and v = Initial and final velocity of the body, a = Acceleration of the body and s = Displacement of the body in time t seconds.)
Consider the following statements.
1. Negative acceleration means velocity increasing with time.
2. A body is said to have non-uniform acceleration, if either magnitude or direction or both of them change during motion.
3. Zero acceleration means, velocity is uniform.
Which of the statements given above is/are correct?