Question

A particle will start motion downward with the velocity of 4m/s. What is the velocity of this particle at t=2 s? (g=9,8 m/s2)

a. 14.5 m/s
b. 17 m/s
c. 28.5 m/s
d. 23.6 m/s

Answer 1

The velocity of the particle at t=2s is 23.6 m/s.

Step-by-step explanation:

The velocity of a particle at time t=2 s can be determined using the kinematic equation:

v = u + gt

where v is the final velocity, u is the initial velocity, g is the acceleration due to gravity, and t is the time interval.

Plugging in the given values, we have v = 4 + (9.8 * 2) = 4 + 19.6 = 23.6 m/s.