Question

A ball of mass 150 gm travelling at speed of 20m/s is caught by fielder and brought to rest in o.04 s the force appiled to ball and the distance over

Answer 1

Answer: 75N and 0.4m

Explanation:

// Find Force using formula F = M(V-U)/T.

Mass = 150g = 0.15kg

V = 0 m/s

U = 20 m/s

T = 0.04 sec.

F = 0.15(0-20)/0.04 = 0.15 * (-20) /0.04 = - 75.

Force applied on ball = 75N.

//Now to find distance use the formula V² - U² = 2AS.

To do this we need to find acceleration first, Formula is Force  = Mass * Acceleration

Acceleration (A ) = F/M = - 75/0.15 = -500 m/s².

//substitute the values in V² - U² = 2AS.

(0)² - (20)² = 2 * (-500) * S

S= -400 / 2 * (-500) = 0.4m