Question

an object starts from rest covered 200 m in 4s. if the mass of the object is 100g calculate the magnitude of the force experienced by the object. assume object is moving with constant acceleration.​

Answer 1

Answer:

☆Concepts:

》since the object is moving with constant acceleration, we can apply the equations of motion.

☆ Given:

》 initial velocity (u) =0 , since object is at rest.

》mass(m) = 100g = 0.1kg

》distance covered(s) = 200m

》time = 4s

☆Formula applied:

》$\boxed{\bf{s=ut + \dfrac{1}{2}at^{2}}}$

》$\boxed{\bf{F = ma}}$

☆Solution:

》s = ut + $\dfrac{1}{2}at^{2}$

》200 = 0 + $\dfrac{1}{2}a(4)^{2}$

》200 = 8a

》 a= 25m/s2

》F=ma

》F = 0.1 × 25

》 F = 2.5 N

♧hope it helps! ♧