for how long should a force of hundred Newton act on a body of mass 20 kg so that it required a velocity of 10 metre per second
Answers
Answered by
3
Answer:
2 seconds
Explanation:
- Force = 100 N
- Mass = 20 kg
From Newton's second law
Acceleration = Force / Mass
= 100 N / (20 kg)
= 5 m/s²
Now, use equation of motion
- v = u + at
Where
- v = Velocity after time "t'
- u = Velocity when "t = 0"
- a = Acceleration of body
- t = Time taken for the body to change its velocity from "u" to "v"
t = (v - u)/a
= (10 m/s - 0 m/s) / (5 m/s²)
= (10/5) s
= 2 s
Answered by
1
Force = 100 N
Mass = 20 kg
From Newton's second law
Acceleration = Force / Mass
= 100 N / (20 kg)
= 5 m/s²
Now, use equation of motion
v = u + at
Where
v = Velocity after time "t'
u = Velocity when "t = 0"
a = Acceleration of body
t = Time taken for the body to change its velocity from "u" to "v"
t = (v - u)/a
= (10 m/s - 0 m/s) / (5 m/s²)
= (10/5) s
= 2 s
Similar questions