ANSWER ASAP A particle moves in a straight line with constant acceleration. At t=10s velocity and displacement of the particles are 16m/s and 39m respectively. What will be the velocity after 10 sec..
a)22m/s
b)18m/s
c)20m/s
d)28m/s

Explanation:

t = 10s

initial velocity,u = 16m/s

displacement,s = 39m

Using the second law of motion;

s = ut + at^2

39 = 16(10) + a(10)^2

39 = 160 + 100a

- 121 = 100a

acceleration,a = -1.21m/s^s

Using the first law of motion;

v = u + at

v = 16 + (-1.21(10))

v = 16 - 12.1

Velocity after 10s,v = 3.9m/s

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

c) up

hope this