Consider again the situation described in the last question, in which a sponge mounted on a low-friction cart collides with a rubber band. For the period between when the “sponge cart” first makes contact with the rubber band and when the sponge cart comes to a full stop, which one of the energy diagrams below best describes the interaction between the sponge cart and the rubber band?

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

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hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

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force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.