E: P: 5. A force acts on an object and accelerates it at 3.4 m/s² for 2.25 seconds. What is the change in the object's velocity? A: E: 7. A ball is rolling down a ramp and accelerates at a rate of 1.2 m/s². How long will it take for the ball to experience an increase in velocity of 4.8 m/s? P: A: 6. A car starts from rest and accelerates at 25 m/s² for 10 seconds. What is the car's final velocity? E: P: A: 8. What is the final velocity of a rocket if it accelerates from an initial velocity of 30m/s at 5m/s² for 10 seconds? E: P: A:

Q: Calculate the amount of work done if a 300 N object is lifted to a height of 2.5 m.

A: Given that Weight of object F = 300 N Height h = 2.5 m

Q: Write a short note on work?

A: Work

Q: Rey is exerted a 500-N force to push the table across the 5meter floor. If he finished it in 10…

A: Given  Force, F = 500 N  Distance, D = 5 meter  Time ,T = 10 sec

Q: Calculate the work done by a force of 70 N in lifting a load of 5kg to a height of 10m (g = 10ms2)

A: Work done is calculated as:   Work = Force x Displacement W = F.d…

Q: Suppose a car is being towed with a force of 1000N. The chain used to pull the car makes a 25 degree…

A: Force F= 1000NDisplacement of car d=5km= 5000mAngle =25° with horizontal

Q: A casting of mass 150 kg is lifted 4 meters in 15 seconds by means of a crane. What is the power?

A: Given data The mass of the casting is given as m = 150 kg. The casting is lifted up to h = 4 m. The…

Q: Compute displacement Work done=112.212 J Force=123 N

A: Given data :Workone=112.212 JForce=123 NRequired :displacement

Q: Find the value of force applied if work done is 230 J and displacement is 8.5 m.

A: Given value--- Work done = 230 J . displacement = 8.5 m. We have to find--- force ?

Q: 18 kg. over the side of a building. the work required to the chain

A:

Q: The rate of doing work is known as

A: In physics, the rate of doing work is known as Power. It is equivalent to an amount of energy…

Q: Exarmple: What work is done by a 4-hp mower in one hour? The conversion factor is needed: 1 hp = 550…

A: Given: Power of mower P = 4 hp time t = 1 hr

Q: A 91.0 kg person climbs stairs, gaining 4.00 meters in height. Find the work done (in J) to…

A: Work done=3567.2 j

Q: Compute and provide solution 1. A 23.2 kg boy fell 0.900 m out of the bed. Hom much potential…

A: Given, Mass = 23.2 kg Height = 0.900 m

Q: Find the force applied Work done 887.22 J Displacement 55 m

A: Given data : Work done=W Displacement=d   Required : Force applied

Q: Find the work done Force=123 N Displacement 1 m

A:

Q: Find the displacement Work done=250 J Force=26 N

A: Given data : Work done=W Force=F   To find : Displacement

Q: A crate of mass 45 kg is pushed along a floor with a force of 20.022 N for a distance of 8.011 m.…

A: Given data:  Mass (m) = 45 kg Force (F) = 20.022 N Distance (d) = 8.011 m Required: Work done (W)

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: