Advertisements
Advertisements
प्रश्न
Use Newton's second law to explain the following:
While catching a fast moving ball, we always pull our hands backwards.
Advertisements
उत्तर
While catching a fast moving ball, we always pull our hands backwards to increase reaction time so force experienced would decrease.
APPEARS IN
संबंधित प्रश्न
A person says that he measured the acceleration of a particle to be non-zero even though no force was acting on the particle.
Two blocks of equal mass m are tied to each other through a light string. One of the blocks is pulled along the line joining them with a constant force F. Find the tension in the string joining the blocks.
A constant force F = m2g/2 is applied on the block of mass m1 as shown in the following figure. The string and the pulley are light and the surface of the table is smooth. Find the acceleration of m1.
A body of mass 5 kg is moving with velocity 2 m s-1. Calculate its linear momentum.
A bullet of mass 50 g moving with an initial velocity 100 m s-1 strikes a wooden block and comes to rest after penetrating a distance 2 cm in it. Calculate: (i) Initial momentum of the bullet, (ii) Final momentum of the bullet, (iii) Retardation caused by the wooden block and (iv) Resistive force exerted by the wooden block.
A stone is dropped freely from the top of a tower and it reaches the ground in 4 s. Taking g = 10m s-2, calculate the height of the tower.
An electron of mass 9 × 10−31 kg is moving with a linear velocity of 6 × 107 ms−1. Calculate the linear momentum of electron.
Multiple Choice Question. Select the correct option.
A force acts on a body of mass 3 kg such that its velocity changes from 4 ms−1 to 10 ms−1. The change in momentum of the body is
ame the law of motion which gives the definition of force.
State Newton's second law of motion. Is Newton's first law of motion contained in Newton's second law of motion?
