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Define universal gravitational constant. Does the value of G change with a change in mass and distance?

How can the mechanical advantage of a lever be increased.

The acceleration of a particle is defined by the relation, $a=-<!--\; -\; -->4x(-<!--\; -\; -->1+\frac{1}{4}{x}^2)$, where x is displacement along x-axis. All the quantities are in SI units. If velocity of the particle (v)=17 m/s when x=0, then the velocity of the particle when x=4 m is
A) 12 m/s
B) 15 m/s
C) 20 m/s
D) 25 m/s

A car is moving with a constant speed of 20 meters per second. What total distance does the car travel in 2.0 minutes?

A ball is thrown vertically upwards with velocity of 25 m/s from the top of Tower of height 30m. how long it will take to travel before it hits the ground? $g=10m/s^2$

What does it mean when Gibbs free energy is 0?

What is anti gravity​​​​​​

State which of the following situations are possible and give an example for each of these: (1) an object with a constant acceleration but with zero velocity. (2) an object moving in a certain direction with acceleration in the perpendicular direction.

A player throws a ball upwards with an initial speed of $29.4m{s}^{-1}$. (a) What is the direction of acceleration during the upward motion of the ball? (b) What are the velocity and acceleration of the ball at the highest point of its motion? (c) Choose the x = 0 m and t = 0 s to be the location and time of the ball at its highest point, vertically downward direction to be the positive direction of x-axis, and give the signs of position, velocity and acceleration of the ball during its upward, and downward motion. (d) To what height does the ball rise and after how long does the ball return to the player’s hands? (Take $g=9.8m{s}^{-2}$ and neglect air resistance).

750.0-kg boulder is raised from a quarry 125 m deep by a long uniform chain having a mass of 575 kg. This chain has uniform strength, but it can only support a maximum tension of 2.50 times its weight at any point without breaking. (a) What is the maximum acceleration the boulder can have and still get out of the quarry, and (b) how long does it take to be lifted out at maximum acceleration if it started from rest?

According to Newton's law of gravitation, every object in the universe attracts every another object, then why dont objects move under the influence of this force of gravitation?

Why is the value of g greater at the pole?

Difference between centre of mass and centre of gravity?

A driver of a car traveling at 15.0 m/s applies the brakes, causing a uniform acceleration of $-<!--\; -\; -->2.0m/s^2$. How long does it take the car to accelerate to a final speed of 10.0 m/s? How far has the car moved during the braking period?

A ball is thrown vertically upwards with a velocity of $49m/s$. Calculate the maximum height to which it rises.

The faster an object moves, the ________ is its kinetic energy.

An archer shoots an arrow in the air horizontally. However, after moving some distance, the arrow falls to the ground. Name the initial force that sets the arrow in motion. Explain why the arrow ultimately falls down.

A stone falls from a cliff and travels $24.5m$ in the last second before it reaches the ground at the foot of the clif. Find the height of the cliff. ($g=9.8m{s}^{-2}$)

Can kinetic energy be stored in a battery?

A wheel rotates with a constant angular acceleration of $3.6rad/s^2$. If angular velocity of the wheel is 4.0 rad/s at time $t_0=0$, what angle does the wheel rotate in 1 s? What will be its angular velocity at t=1 s?
A) $\mathrm{\theta <!--\; \theta \; -->}=5.8rad,\mathrm{\omega <!--\; \omega \; -->}=0.4rad/s$
B) $\mathrm{\theta <!--\; \theta \; -->}=2.2rad,\mathrm{\omega <!--\; \omega \; -->}=0.4rad/s$
C) $\mathrm{\theta <!--\; \theta \; -->}=5.8rad,\mathrm{\omega <!--\; \omega \; -->}=7.6rad/s$
D)$\mathrm{\theta <!--\; \theta \; -->}=2.2rad,\mathrm{\omega <!--\; \omega \; -->}=7.6rad/s$