Answer:
option (b) is correct.
Explanation:
As the sled is moving with constant velocity, it means the net force on the sled is zero. It shows that the net force on the sled is zero and hence the applied force is equal to the friction force acting on the sled.
Option (b)
Answer:
y=150,x=3
Explanation:
since to the object can only begin to decelerate only when it reaches its maximum hight
u can use calculus
By definition,
speed = distance/time
Given:
Distance = 200 m
Time = 23 s
Therefore
Speed = (200 m)/(23 s) = 8.695 m/s
Answer: 8.7 m/s