# What is the net external force acting on a rock thrown straight up when it is at the top of its trajectory?

## What is the net external force acting on a rock thrown straight up when it is at the top of its trajectory?

What is the net external force acting on the rock when it is at the top of its trajectory? At the top of the trajectory, the net external force on the rock is the gravitational force on the rock from the Earth.

## What is the net force acting on the rock?

Answer: All the same. The net force acting on each rock is the gravitational force the Earth exerts on the rock (the weight of the rock).

## How long does it take the rock to reach half its maximum height?

How long does it take the rock to reach half its maximum height? Hence, the first time the rock reaches half the maximum height is at about 4.39 seconds and the second time is at about 25.61 seconds .

## What is the net force that acts on a 10 n falling object when it encounters 4 N of air resistance 10 N of air resistance?

What is the net force that acts on a 10-N falling object when it encounters 4 N of air resistance? When it encounters10 N of air resistance? The net forces are 6 N and 0 N, respectively.

## Is there any force acting on a rock moving in a straight line?

Answer: All the same. The net force acting on each rock is the gravitational force the Earth exerts on the rock (the weight of the rock).

## What is the acceleration of a rock that has been thrown straight up when it is at the top of its trajectory?

If a body is moving in a straight line at a constant velocity, then no forces are acting on the body.

## What is the net force of an object at its highest point?

The acceleration at the top of the vertically upward trajectory will equal 0 ms2.

## What is the net force on the rock?

The net force acting on each rock is the gravitational force the Earth exerts on the rock (the weight of the rock). The gravitational force is proportional to the mass of the rock, so the ranking depends on the masses of the rocks only.

## Is there any force acting on a rock?

The force acting on a rock moving in a straight line in outer space at constant speed is gravity. If the rock comes near the planet then it will attract and if the attraction is sufficient then a collision will formed between that two things.

## What is the net force acting on a?

Net ForceEquilibriumThe sum of all forces acting on an objectWhen an object is not accelerating: either moving at a constant speed or at rest17-Sept-2021

## How do you find the net force in acting?

When a force is applied to the body, not only is the applied force acting, there are many other forces like gravitational force Fg, frictional force Ff and the normal force that balances the other force. Therefore, the net force formula is given by, FNet Fa + Fg + Ff + FN.

## How do you know if an object reaches half its maximum height?

The maximum height is 80. So the half of its maximum height 80/2 40. To find the time it reach half its maximum height, we need to solve s(t) 40, i.e 16t u2212 0.8t2 40.

## What is the maximum height reached by the rock?

From 3rd equation of motion v^2-u^22gh . Now here 024.1^22*-9.8*h580.8119.6*hh29.63 meter. So the maximum height reach by rock is 29.63 m.

## How long did it take to reach its highest point?

Time taken by the ball to reach its highest point will be 2.551 seconds .

## How long does the ball take to hit the ground after it reaches its highest point answer in units of S?

approximately 1.84 s

## What is the net force that acts on a 10 N freely falling object?

The ratio of force to mass for free falling objects is equal to the force of gravity ‘g’ which at the surface of the earth is equal to 9.8 m/s2. What is the net force that acts on a 10-N freely falling object? The net force acting on a 10 N free falling object is 100 N (98 N to be precise)

## What is the net force of an object falling?

For an object in free fall, the net force on it equals its weight (the pull of gravity – the force exerted on it by the Earth) and its weight is proportional to its mass. In other words, if object A has twice the mass of object B, then A also weighs twice as much as B.

## What is the net force acting on a 50 N falling object that has reached terminal velocity?

The object is not accelerating any more. It has reached its terminal velocity and is falling at a steady speed. The resultant force is zero because the frictional force acting against it is now the same as the weight of the object.

## What is the net force when the object encounters 25 N of air resistance?

The net force on a 25 N freely falling (no air resistance) object is its weight, 25 N. If it encounters 15 N of air resistance, the net force on it is 10 N (25 N down, 15 N up). If it encounters 25 N of air resistance, the net force on it is zero – it will not accelerate, so it is at its terminal velocity.

## Is there any force acting on a rock moving in a straight line in out space at constant speed give reasons what will happen if this rock comes near a planet?

Answer : The force acting on a rock moving in a straight line in outer space at constant speed is gravity. If the rock comes near the planet then it will attract and if the attraction is sufficient then a collision will formed between that two things

## Are there force acting on the rock?

The rock is stationary, so there is also a force pushing up on the rock. If your huge rock is sitting on the ground, then the ground is pushing up on the rock just as hard as gravity is pulling it down.

## What type of force is acting on rock C?

The obvious force acting on the rock is gravity, which follows an inverse-square law between all objects everywhere (you can dismiss anything small or far away as negligible).

## Is there work done in space?

In space there are negligible retarding force so the work done remains stored and body travels large distance. On earth there is friction which eats the work done and body isn’t able to cover large distance in the absence of forces to sustain motion.