Answer:
Initial velocity of an object
The acceleration of an object
The change in position of an object
Explanation:
In that equation, you are solving for the final velocity of an object.
Answer:
W = -148.8 J
Explanation:
given,
mass = 9.2 kg
initial speed = 1.42 m/s
pulling force = 94 N
angle θ = 19.6°
coefficient of kinetic friction = 0.400
the crate is pulled = 4.92 m
to calculate of work done by the gravitation force
gravitation force
W = ( m g sin θ ) x
W = 9.2 × (-9.8) × sin 19.6° × 4.92
W = -148.8 J
Work done by the gravitation force is taken as negative because gravitation force act opposite to the force applied.
Answer: liquid
explanation: 1 liter is a measurement of liquids, not solids, or gases.
Liquids also have a set volume, but can flow to take the shape of the bottom of their container.
Answer:
A. 3.3 m
Explanation:
Here, we have to use conservation of energy principle.
When the ball is at maximum height, the instantaneous velocity at that point is 0 m/s. So, the kinetic energy of the ball is also 0 at the maximum height. Thus, at maximum height, the energy possessed by the ball is gravitational potential energy only.
Now, when the ball reaches the ground, all the gravitational potential energy changes into kinetic energy because of the conservation of energy.
Therefore, the energy transformation can be given as:
Decrease in potential energy = Increase in Kinetic energy
Decrease in potential energy is given as:
Increase in kinetic energy is given as:
Therefore,
Now, plug in 8 for , 9.8 for and solve for height . This gives,
Therefore, the maximum height reached by the ball is 3.3 m.
Answer:
a point representing the mean position of the matter in a body or system.
Explanation: