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Pavlova-9 [17]
2 years ago
6

2. What is equal to the kinetic energy of a car with a mass of 0.5t (tonne) if it travels

Physics
1 answer:
GalinKa [24]2 years ago
7 0

Answer:

7.14kg/h

Explanation:

=500kg/70h

=7.14kg/h

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An Atwood machine is constructed using a hoop with spokes of negligible mass. The 2.5 kg mass of the pulley is concentrated on i
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Explanation:

63 kg ice skater finishes her performance and crossed the finish line with a speed of 10.8 m/s

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3 years ago
11. Explain why in terms of gravity and air resistance and the 2nd law, objects in free fall regardless of mass hit at the same
Alchen [17]

Answer:

When an object is dropped, it accelerates toward the center of Earth. Newton's second law states that a net force on an object is responsible for its acceleration. If air resistance is negligible, the net force on a falling object is the gravitational force.

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3 years ago
If chris throws a baseball 60 meters in 4 seconds, what is the average speed of the football?
IceJOKER [234]
The average speed of the football is 15 meters per second. Just divide both of the numbers by 4 :)
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3 years ago
A wad of clay of mass m1 = 0.49 kg with an initial horizontal velocity v1 = 1.89 m/s hits and adheres to the massless rigid bar
notka56 [123]

Answer:

<h2>The angular velocity just after collision is given as</h2><h2>\omega = 0.23 rad/s</h2><h2>At the time of collision the hinge point will exert net external force on it so linear momentum is not conserved</h2>

Explanation:

As per given figure we know that there is no external torque about hinge point on the system of given mass

So here we will have

L_i = L_f

now we can say

m_1v_1\frac{L}{2} = (m_2L^2 + m_1(\frac{L}{2})^2)\omega

so we will have

0.49(1.89)(0.45) = (2.13(0.90)^2 + 0.49(0.45)^2)\omega

\omega = 0.23 rad/s

Linear momentum of the system is not conserved because at the time of collision the hinge point will exert net external force on the system of mass

So we can use angular momentum conservation about the hinge point

6 0
3 years ago
Is gasoline a compound or a mixture ?
valina [46]
I believe its a mixture

3 0
3 years ago
Read 2 more answers
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