The Earth’s Moon has considerably less mass than the Earth itself. Not only is the Moon smaller than the Earth, but it is only about 60 percent as dense as Earth. Thus, the gravitational attraction on the Moon is much less than it is here on Earth, and a person weighs less on the Moon.

The Earth and the moon are attracted to each other by each other by gravitational force. This is because as per newton’s third law of motion, forces of action and reaction are always eqyal and opposite. The force exerted by earth on moon is equal and opposite to the force exerted by the moon on earth.

According to the universal law of gravitation, two objects attract each other with equal force but in opposite direction. Therefore, the earth attracts the moon with the same force as the moon attracts the earth.

Answer: The Earth and the moon experience equal gravitational forces from each other. However, the mass of the Earth is much larger than the mass of the moon. Hence, it accelerates at a rate lesser than the acceleration rate of the moon towards the Earth. For this reason, the Earth does not move towards the moon.

Without having the force of Gravity from earth-moon would have just floated away from us. The moon’s velocity and distance from Earth allow it to make a perfect balance between fall and escape. That’s why the moon doesn’t fall on Earth.

Hence force of attraction will be quadrupled. (1) When distance between objects is doubled, force of attraction will become 122=14 times i.e. will become one-fourth. (3) When distance between objects is halved, force of attraction will become 1(12)2=114=4 times i.e. will become four times.

If the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.

when the distance between the 2 objects is halved, the gravitational force between the 2 objects is doubled. when the distance between the 2 objects is doubled then the gravitational force doubles.

gravity

Both in the Newton theory of gravitation and in the General Theory of Relativity the gravitational force is exclusively attractive one. However, the quantization of gravity shows that the gravitational forces can also be repulsive [3].

zero

magnitude of Force due to gravity=magnitude of Restoring force, then the acceleration of the body is zero, and the body has maximum constant velocity. magnitude of Force due to gravity < magnitude of Force of the spring, then the velocity of the body decreases until it stops.

Yes indeed. Derivative of velocity with respect to time is acceleration. That means if accelerations is zero, velocity must be constant. Also if the velocity is 0(which is itself a constant) also indicates that acceleration is zero.

Answer: Yes, an object can have zero velocity and still be accelerating simultaneously.

so if the velocity does not change with time the acceleration is necessarily zero. Since in your example the velocity is constant during the interval that means dv/dt=0 and therefore that a=0 during the interval.

When acceleration is zero (that is, a = dv/dt = 0), rate of change of velocity is zero. That is, acceleration is zero when the velocity of the object is constant. Motion graphs represent the variations in distance, velocity and acceleration with time.

A bode can have acceleration without zero velocity. when an object is thrown upwards, then at the maximum height, velocity at body is zero at that instant but it has acceleration due to gravity.

Answer. Yes, A body can have acceleration while at rest,but it will be negative acceleration or retardation.

Explanation: There is no such case. An object with a constant acceleration but zero velocity is not possible, because according to the definition of acceleration, acceleration is the rate of change in velocity. So there is no change in velocity, hence no acceleration.

Yes, a body with a velocity 0 can still accelerate. The simplest example is a body which is thrown up. At the peak point its velocity becomes 0 but still accelerates due to gravity.

This acceleration is the gravitational acceleration. At that point the component of acceleration/gravitational acceleration works there. So, at the topmost point the velocity is zero but acceleration is not and has a finite value. Therefore, a body can have zero velocity and finite acceleration.

1-Yes ,the direction of velocity can change while experiencing a constant acceleration. Like, in uniform circular motion there is a change in direction of the velocity and acceleration is constant in this case.

Velocity of a body on reaching the point, from where it was projected upwards, is (a) v = 2u – Sarthaks eConnect | Largest Online Education Community.

We do not consider the rate of change of the acceleration because case is quit complex and we have use the method of integration and differentiation (approximate methods) to calculate the velocity and position of a particle. That is why we mostly deal with the cases in which acceleration is constant in linear motion.

An object that is thrown vertically upwards decelerates under the earth’s gravity. Its speed decreases until it attains a maximum height, where the velocity is zero. Then it is accelerated uniformly downwards under gravity.

after 1 second its velocity is -10 m/s. after 2 seconds its velocity is -20 m/s. after 3 seconds its velocity is -30 m/s • after 4 seconds its velocity is -40 m/s.

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is a physical vector quantity; both magnitude and direction are needed to define it.