A4 g bullet is fired horizontally with a speed of 300m/s into 0.8 kg block of wood at rest on a table. if the coefficient of friction between block and table is 0.3, how far will the block slide approximately?

d = 3784.5 m

Explanation:

First bullet goes into the block and fixed into it

so here the speed of the combined is given by momentum conservation

so it is given as

here we know that

now from above formula

now the coefficient of friction on the floor is given as

so the deceleration is given as

now from equation of kinematics we know that

and 1and 1

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle