Physics, 25.09.2021 01:00 jaquiel9358
A small rock bounces off the windshield of a moving car and experiences a large change in velocity. How does the car’s momentum change?(1 point)
It has a change in momentum equal to that of the rock, in the opposite direction.
It has a much smaller change in momentum than that of the rock, in the opposite direction.
It has a much smaller change in momentum than that of the rock, in the opposite direction.
It has a change in momentum greater than that of the rock, in the opposite direction.
It does not change.
Which of Newton’s laws of motion states that an object at rest stays at rest and an object in motion stays in motion with the same speed and the same direction unless acted upon by an unbalanced force?(1 point)
Newton’s third law of motion
Newton’s second law of motion
Newton’s fourth law of motion
Newton’s first law of motion
Which is always true in a closed system?(1 point)
Velocity is constant.
Acceleration is not constant.
Momentum is conserved.
Mass is not conserved.
Answers: 2
Physics, 22.06.2019 11:00, stankyweezle
A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n
Answers: 3
Physics, 22.06.2019 17:00, WorkingButNotReally
If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction
Answers: 3
Physics, 22.06.2019 18:20, shongmadi77
Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?
Answers: 1
A small rock bounces off the windshield of a moving car and experiences a large change in velocity....
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