Advertisements
Advertisements
Question
Use Newton's second law to explain the following:
While catching a fast moving ball, we always pull our hands backwards.
Advertisements
Solution
While catching a fast moving ball, we always pull our hands backwards to increase reaction time so force experienced would decrease.
APPEARS IN
RELATED QUESTIONS
Two masses 8 kg and 12 kg are connected at the two ends of a light, inextensible string that goes over a frictionless pulley. Find the acceleration of the masses, and the tension in the string when the masses are released.
A block of mass 0.2 kg is suspended from the ceiling by a light string. A second block of mass 0.3 kg is suspended from the first block by another string. Find the tensions in the two strings. Take g = 10 m/s2.
Find the acceleration of the blocks A and B in the three situations shown in the following figure.

Two balls A and B of masses m and 2 m are in motion with velocities 2v and v, respectively. Compare:
(i) Their inertia.
(ii) Their momentum.
(iii) The force needed to stop them in the same time.
Write the mathematical form of Newton's second law of motion. State the conditions if any.
A pebble is thrown vertically upwards with a speed of 20 m s-1. How high will it be after 2 s? (Take g = 10 m s-2)
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.
Why is it advantageous to turn before taking a long jump?
A ball is thrown upward and reaches a maximum height of 19.6 m. Find its initial speed?
How does moving your hand backward while catching a cricket ball reduce pain?
