(4) Two bullets are fired at the same time with the same kinetic energy. If one bullet has twice the mass of the other, which has the greater speed and by what factor? Which can do the most work? (show/explain your answer)

Q: In the figure shown, if the mass (m-9 Kg) is moving with constant speed and traveled a distance d=20…

A: Multiple question. Answer for first image is provided below. Given : Mass, m = 9 kg Force, F = 10N…

Q: A shopper in a supermarket pushes a trolley with a force of 40N directed at an angle of 35° downward…

A: Work-done by a force F over displacement 'd' is given by: W = F.d W = F*d*cos theta Given that: F =…

Q: Find the work done by the force F = 3i – 5j in moving an object from the point (2,2) to the point…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: Does the work you do on a book when you lift it onto a shelf depend on the path taken? On the time…

A: Work done

Q: Find the work done by non conservative friction forces. Weight of the ball = 400 grams Initial…

A: Work done on a body is given by the net change in the energy of the body. Initial energy of the ball…

Q: Does the kinetic energy of a car change more when it goes from 10 to 20 km/h or when it goes from 20…

A: The change in kinetic energy when the car moving from 10 to 20 km/h is ΔKE=12m20 km/h2-10…

Q: Forces such as gravity, for which the work done does not depend on the path taken but only on the…

A: Explanation Conservative forces are those forces in which work done by any force in a closed path is…

Q: Which situation DOES NOT demonstrate a work done? O A lady in an ascending elevator. O A waiter…

A: The work done by a force can be defined as the product of the displacement of an object and the…

Q: Can the power expended by a force be negative?

A: The rate of doing work is known as power.

Q: A constant force of 55.9 N, directed at 28.7° from horizontal, pulls a mass of 15.3 kg horizontally…

A: The work done in the direction of motion is, W=Fcosθd

Q: A ball weighing 3 kg moves at a speed of 2 m / s and collides with a resting ball weighing 5 kg.…

A: From the conservation of momentum: Collision is inelastic. Thus, kinetic energy will be lost in the…

Q: If your friend pushes a lawnmower 4 times as far as you do while exerting only half the force, which…

A: The work is force times distance. Your friend uses a half of the force but goes four times as far.…

Q: A man pushes a lawn mower on a level lawn with a force of 200N. If only 60% of the totalapplied…

A: Given information: The force on the lawn rover (F) = 200 N The fraction of force used in the…

Q: A ball was launched upwards and vertically at a speed 3 m/s up to a height 4 m. What the work done…

A:

Q: Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?

A: m = 1500 kg  v = 60 km/h = (60 *518)m/sec v = 16.66 m/sec

Q: Give 5 situations in which work is not done on it.

A:

Q: A little boy has mass (m) and a girl who has mass (2m) are standing still at an ice skating rink.…

A: SOlution:

Q: An 16-N block slides down an incline. It has an initial speed of 7 m/s. The work done by the…

A:

Q: The same amount of force is applied on the box in 3 different ways. In which situation will the work…

A: we know  work done = force in the direction of displacement *  displacement. so basically work done…

Q: Calculate the work needed to lift a 20 kg sack of rice vertically at 6-5 m ?

A:

Q: The driver of a passenger car puts the car to "rest" at the speed of 90 km/h, therefore, the car's…

A:

Q: Cite an example wherein  force exerted on a body does no work. Explain.

A: Work done is defined as the product of force, displacement and cosine of angle between force and…

Q: How much work did the movers do (horizontally) pushing a 46.0-kg crate 10.3 m across a rough floor…

A:

Q: ure shown, if the mass (m=8 Kg) is moving with constant speed and traveled a distance d=15 m, what…

A: Given that Block is moving at constant speed, So that means acceleration of block in horizontal…

Q: If 2.0 J of work is done in raising a 0.180 kg apple, how far is it lifted? (Remember: F = mg)

A: Given  Work done W=2J Mass of apple m=0.18kJ

Q: When a punter kicks a football, is he doing any work on theball while the toe of his foot is in…

A: The punter can only be applying a force when he is in contact with the football. Therefore the…

Q: How much work does a sled dog do if she pulls with a force of 55 N on a horizontal track over a…

A: Here, Force and displacement are in the same direction, Therefore, Work done= Force x Distance…

Q: A car accelerates uniformly from rest to 20.0 m/s in 5.6 s along a level stretch of road. Ignoring…

A:

Q: Calculate the kinetic energy of a 0.15 kg baseball moving at a speed of m 39.0 ". Round your answer…

A:

Q: If a 1300-kg car can accelerate from 35 km/h to 65 km/h in 3.8 s, how long will it take to…

A: Here, ∆v=65km/h-35km/h=30km/h×1000m1km×1h3600s=8.33m/s The equation for power can be given as…

Q: A baseball of mass 0.25 kg is hit at home plate with a speed of 40 m/s. When it lands in a seat in…

A: Given: Mass of the ball = 0.25 Kg Speed of the ball = 40 m/s Horizontal distance from home plate =…

Q: A shopper in a supermarket pushes a trolley with a force of 40N directed at an angle of 35° downward…

A:

Q: Two stones, one with twice the mass of the other, are thrownstraight up and rise to the same height…

A: Formula for gravitational potential energy is,

Q: How much work is done by the boy pulling his sister30.0 m in a wagon as shown below? Assume no…

A:

Q: A shopper in a supermarket pushes a trolley with a force of 40N directed at an angle of 35° downward…

A:

Q: A force of F = 161 N pulls a mass of 15 kg a distance of x = 5.7 m, as shown. How much work is done…

A: Given,            force (f) =161N            distance (d) = 5.7 m

Q: How much work does gravity do on a 0.190-kg ball falling from a height of 15.0 m? (Neglect air…

A: Consider the mass of the ball be m, the weight of the ball be w, and height or distance of the ball…

Q: If force and distance traveled are tripled, how does that affect work? Is it also tripled or 1/3?:(

A: We know that work depends on force and distance travelled in the direction of force i.e W = F× D…

Q: How much work does gravity do on a 0.150 kg ball falling from a height of 10 m? (Neglect air…

A:

Q: When a conservative force does positive work on a body, the potential energy ofthe body…

A: Decreases