As a truck rounds a curve, a box in the bed of the truck slides to the side farthest from the center of the curve. This movement
1 answer:
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Answer:
A. potential energy is 258720 Joule
Explanation:
A.Gravitational potential energy is: PE = m × g × h
velocity = 15.33 m/s when the car reaches the bottom of the hill.
where, m = mass
g = acceleration due to gravity
h = height from the bottom of hill.
The potential energy is : m×g×h
=(2200×9.8×12)
=258720 Joule
B. at the bottom of the hill, the potential energy is converted into kinetic energy so PE at top = KE at bottom
kinetic energy= (
)
where v = velocity
m= mass
therefore, v=
or, v=
or, v=15.33 m/s
Answer:
= 6 cm/s
Explanation:
<u><em>Given:</em></u>
Acceleration = a = 2 cm/s²
Time = t = 3s
Initial Velocity = = 0 cm/s
<u><em>Required:</em></u>
Velocity = = ?
<u><em>Formula:</em></u>
a =
<u><em>Solution:</em></u>
2 =
=> = 2*3
=> = 6 cm/s