100/2.5 is 40.
40 is the energy that is being produced
Answer:
Your answer would be B. fall
Explanation:
This is because sliding would be continuous it just said a fragment of rock fell vertically. Hope this helps
Answer:
The bullet will rise 320 meters above the point of projection.
Explanation:
Assuming that air friction is negligent we can use the kinematic equation:

*acceleration is negative (-a) as it is acting in the opposite direction of the motion of the bullet.*
Answer:

Explanation:
Given that
Diameter of laser beam d= 2.4 mm
Radius of laser beam r= 1.2 mm
Power P =1.7 W
We know that intensity(I) of laser beam given as follows

Now by putting the values


So

So the intensity at 1.76 m away from laser

Answer:
The speed of the vehicle changes in each second is, v = 0.00111 Km/h
Explanation:
Given,
The acceleration of the vehicle, a = 4 Km/h²
Converting it into m/s,
a = 0.0003086 m/s²
In each second the vehicle covers 0.0003086 m
The speed of the vehicle in each second is given by 0.0003086 m/s
Converting it into Km/h
v = 0.00111 Km/h
Therefore, the speed of the vehicle changes in each second is, v = 0.00111 Km/h