I need help for number 10 plzzzz
2 answers:
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Answer:
No, the truck will not cross the barrier.
The closeness of the truck to the barrier is of 21.875 m
Solution:
As per the question:
Velocity of the truck, v = 25.0 m/s
Acceleration of the truck, a = - 4
Now,
Since, the barrier at a distance of 100 m. Thus in order to check whether the truck hit the barrier or not, we will see the distance, d it covers by using the kinematic eqn:
Final velocity, v' = 0 m/s
Initial velocity = v
Now,
d = 78.125 m
Thus the truck will not cross the barrier.
Distance between the barrier and the truck:
100 - 78.125 = 21.875 m
- When an object is stationary all the forces acting on the object comes in equilibrium with each other.
- The forces acting on a stationary object are:
- Normal force (upwards)
- Gravitational force (downwards)
- push force
- friction force
- All these forces cancel out each other.
