1. (From an old exam) The graph below shows the velocity of a car (in kilometers per hour) as a function of time (in seconds); all parts of this question refer to this graph.

Q: What is the work done by the force pulling a block 1 meter with two 0.5 kg masses on it?

A: We know, Workdone=Force ×displacement

Q: Rings 2 n work done by the мал 2

A: Write the expression for the work done. W=F→⋅d→W=Fdcosθ Here, F is the force, d is the distance, and…

Q: What net force, in Newtons, is needed to do 1,847 J of work over a distance of 144 meters?   Round…

A: Given thatwork, W=1847 Jdistance, d=144 mas work, W=Fdwhere F is force

Q: A filled moving box is being pushed out of an apartment to the car with a force of 175N over 5m.…

A: Given data:          Applied force =175 N Total displacement = 5 m Write the equation for the work…

Q: 6-3. Assume that the shape of the resilin in each leg of the flea is equivalent to a cylinder 2 x…

A: Given that,Length of cylinder, L=2×10-2 cmArea, A= 10-4 cm2length of the resilin, ∆l=10-2 cmweight…

Q: A 5-kg object is pushed across a level surface with a force of 12 N for a distance of 6 m. How much…

A:

Q: After scoring a point, a rugby catcher, weighing 84 kg, celebrates by jumping 1.20 m on the ground.…

A: Given : m = 84 kg h = 1.20 m

Q: 400 Joules of work is done on an object that weights 200 N. How far did the object move?

A:

Q: A gardener pushes down on a lawnmower with a force of 35.0 N to make it move forward. The angle…

A:

Q: Formula W=Fd F = Force d = displaceme The in cowar downward direction (F= mg) of the backpack will…

A: Given  mass m =6 kg Displacement d = 58 m

Q: A gust of wind exerts a FORCE of 86 (kg m/s/s) moving a lawn chair a DISTANCE of 16.9 m in a…

A:

Q: What is the potential energy of a 60 lb kid at the top of a 6ft 8 inch slide? (a) in ftlbs (b) in…

A:

Q: if you do 20 J of work lifting a rock weighing 30 N, how far will you lift it?

A: Write the given values with the suitable variables. W=20 JP=30 N Here, W is the required work and P…

Q: True or False: "An object at rest has potential energy

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: A 5 kg ball is thrown into the air. It is going 2.0 m/s when thrown. How much potential energy will…

A: Given that,The mass of ball, m=5 kgInitial speed of ball, u=2 m/sLet, final velocity is vWe know…

Q: If the weight was 120 lbs what would the power be in hirsepower

A:

Q: When exiting the highway, a 1100 kg car is traveling at 22 m/s. The car's kinetic energy decreases…

A:

Q: A boat travels 200 m due NE, while the wind exerts a force of 450N toward West. How much work does…

A: Given information: The distance traveled by the boat in NE direction (d) = 200 m The magnitude and…

Q: 1) A 4kg box is raised from rest a distance of 3 m by an upward applied force of 60 N. Find: a) The…

A:

Q: Suppose you are using a see-saw with your friend. You have a weight of 500 N and your friend has a…

A: Given data: The weight of man is W=500 N. The weight of friend is W'=600 N. The distance of man from…

Q: What net force, in Newtons, is needed to do 1,164 J of work over a distance of 125 meters?

A:

Q: . A 5,000 N force is applied to box at rest on a frictionless horizontal surface. How much useful…

A: Given data:  Force (F) = 5000 N Distance (d) = 4 m Angle (θ) = 30°, from the horizontal Required:…

Q: Asmall block of mass 137 g starts at rest at A at a height of y7.2 m. slides to where its speed is…

A:

Q: uilding. One of the movers is pushing on the crate with a force of constant magnitude F₁ arallel…

A:

Q: If work is a scalar quantity, how would explain the negative work done

A: Work is a scalar quantity because it is the dot product of two vectors (Force and displacement),…

Q: Calculate the work done by a 71 kg man who pushes a crate 7 m up along a ramp that makes an angle of…

A:

Q: Is work a vector quantity? In other words does it need a direction associated with it ?

A: To define work we just need magnitude and not direction. Also work is the dot product of two vector…

Q: A sled of mass 70 kg starts from rest and slides down a 10° incline 80 m long. It then travels for…

A: Given that-Mass of the sled, m= 70 kgLength of the plane, L= 80 mAngle of inclination of the plane…

Q: Magnitude Direction [0°, 360°). T degrees from the positive x-axis, where 8 €

A:

Q: Person A, is tired pulling Person B and his wagon . So, Person B lets Person A to sit on his wagon…

A:

Q: A ball of mass 3.2 kg and speed 1.0 m/s collides head-on with a 2.5 kg ball at rest. If the…

A: During elastic collision , the momentum and kinetic energy remains conserved.

Q: An arctic tractor drags a 45 ton (that's metric ton: 1 ton = 1000 kg) across the snow, which has a…

A: To calculate the work done by the tractor, we need to know the force applied by the tractor to drag…

Q: You and your friend Gandalf are mowing lawns for extra spending money. Gandalf pushes his mower 20 m…

A: Given data:  Displacement (d1) = 20 m Force (F1) = 100 N Force (F2) = 40 N The work done by both…

Q: w much work is done by a force of 10 N in moving an object through a distance of 1 m in the…

A: Given F=10 N S=1m When Force acts in the direction of displacement.   W=FS Where F=force…

Q: how much work does Ryan to dom to lift a 2.0 x 101 Kg bag of potatoes to his shoulder, 1.7 m above…

A: Given Mass of the bag m = 2.0 x 101 kg Height h = 1.7 m

Q: A 5 kg ball is thrown into the air. It is going 2.0 m/s when thrown. How much potential energy will…

A:

Q: A 5000 kg car moves at 20 m/s. What braking force is needed to bring the car to a halt in five…

A: Given: The mass of the car is m=5000 kg. The velocity is v=20 m/s. The time is t=5 s. The expression…

Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.