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49 Answered Questions for the topic Force

03/16/16

Force and Acceleration

An engineer proposes a new roller coaster for daredevil teens and adults. Along with sizzling vertical loops and horizontal curves, her track would travel beneath a waterfall and into a dark tunnel... more

03/15/16

Force and Acceleration

A coaster has a mass of 800 kg and a radius of 5m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?May use:Fc = Fn +FgFc = MAcAc = v^2... more
Force Physics Work

03/13/16

Physics Problems (2) : Work & Power

Calculate the work done you need to do to raise a 9 kg box a vertical distance of 3 meters. Show all work. When the same box is raised the same vertical distance by pushing it up a 5m long ramp,... more

03/07/16

Solving for Centripetal Force using a Free Body Diagram

A centripetal force of 4000N keeps a 50kg rollercoaster car traveling in a circular path at the top of a loop. Calculate the normal force of the track on the rollercoaster car.   SHOW WORK USING... more

03/07/16

Solving for Centripetal Force using an Free Body Diagram

Gabriella (75  kg) rides a roller coaster. What is her acceleration at the top of the vertical loop if she feels like her weight is 1200N?   What is Gabriella's acceleration at the... more
Force Physics Forces

03/03/16

Explaining physics

A girl twirls a key chain in a circle if she twirls it faster, she finds that she holds the chain tighter. Explain why this is necessary.   I think it's that she has to hold the chain tighter... more
Force Math Science

02/25/16

what is the pressure exerted on the bottom of the pool in the deep end if the water is 3m deep and the dimensions are 7.5m x 6m?

 Hi please help me this question is due tomorrow i have no idea what to do! it is math and science calculating the pressure exerted from the bottom of a deep end of a pool.

02/23/16

a material weighs 400N in air. density is 1600 kg/m^3, what is weight immersed in water?

I dont understand how to calculate this.  

01/11/16

Answer question number nine please.

8.) A 1500-kg automobile, traveling at 5.0 m/s after braking, strikes a power pole and comes to a full stop in 0.1 s. Calculate the force exerted by the power pole and brakes required to stop the... more

01/11/16

Average Force?

In a car crash, a 50 kg passenger moving at 15 m/s is stopped by an air bag in 0.10 sec. What is the average force the air bag exerts on the passenger?   Show work or explain concept using... more

Work & force

I am a weight lifter and want to calculate how much "work" I do when performing the deadlift. I did the math and want to ensure my concepts and calculations are correct, as it has been a while... more
Force

11/23/15

Find the acceleration of the block

A 2.17kg block slides down a smooth, frictionless plane having an inclination of 28 degrees. Acceleration of gravity is 9.8 m/s^2 and answer in units of m/s^2

11/18/15

What is the average pressure exerted on the ground by both feet? One foot?

If a person who exerts 700 N of force has shoes that cover .04 m^2, what is the average pressure exerted on the ground by both feet? One foot?
Force Math Calculus

11/10/15

Find the magnitude of the resulting force and the angle that it makes with the 70lb force.

Two forces, one of 80lbs and one of 70lbs, act on an object at 40 degree angles.  Find the magnitude of the resulting force and the angle that it makes with the 70lb force.   Please show step by... more

11/07/15

A person with a mass of 60.0 kg is traveling at 18 m/s.

A person with a mass of 60.0 kg is traveling at 18 m/s.   a) How much kinetic energy does this person have?   b) How much work is required to stop the person?   c) Calculate the force... more
Force Physics Speed

11/07/15

How far will the faster egg travel once it hits the blanket as compared to how far the slower egg travels when it hits the blanket?

Two eggs are thrown at a blanket. One egg is thrown at twice the speed of the other. If you assume that in both cases the force exerted by the blanket on the egg is the same, how far will the... more
Force Physics Mass

09/18/15

A force of 100N accelerates a bowling ball at a rate of 450m/s^2. What is the mass of the bowling ball?

A force of 100N accelerates a bowling ball at a rate of 450m/s^2. What is the mass of the bowling ball?

08/18/15

If an object is displaced a distance d by a constant force F, the amount of work done is given by _____.

a. W=F+d   b. W=F-d   c. W=Fd   d. W=F/d  
Force Math Science

07/18/15

Physics: Multiple Choice:

Because of friction pendulum clocks need a small driving force, if accidentally it was too large of a driving force and caused a bit too large of an angle of oscillation to be formed what would... more
Force Newtons

04/24/15

What force is necessary to increase the velocity of a 50kg ball from 5m/s to 15m/s

Answer needs to be in newtons
Force

11/04/14

find the magnitude of the force required to keep a 3700 pound car from sliding down a hill inclinded at 5.3 degrees from horizontal

find the magnitude of the force required to keep a 3700 pound car from sliding down a hill inclinded at 5.3 degrees from horizontal
Force Work Powers

10/15/14

Work required and power being used.

Find the work required to lift a mass of 5 tonnes to a height of 30m.  If this is done in 2 minutes, what power is being used?
Force Distance Mass

10/07/14

Force and Motion

How does mass affect distance over time?
Force Physics Work

08/06/14

Physics Work and Energy Question!

A boy pulls a 10.0 kg book rack at rest on a smooth floor with a constant horizontal force of 1.2N starting from rest. Compute the change in kinetic energy of the box after the boy has pulled it a... more
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