Question

In: Physics

At what speed does a 1900 kg compact car have the same kinetic energy as a...

At what speed does a 1900 kg compact car have the same kinetic energy as a 2.00×104 kg truck going 24.0 km/hr ?

Express your answer with the appropriate units.

Expert Solution

Mass of compact car,

Let be the speed of the car.

Mass of the truck,

Speed of truck,

To convert km/hr to m/s. Divide by 3.6

===============================================

Kinetic energy,

Given that Kinetic energy of compact car is equal to kinetic energy of the truck

To convert m/s to km/hr. Multiply by 3.6

ANSWER :

===============================

genius_generous answered 1 year ago

1. At what speed does a 1700 kg compact car have the same kinetic energy as...

1. At what speed does a 1700 kg compact car have the same kinetic energy as a 1.80×104 kg truck going 23.0 km/hr ? 2.The cable of a crane is lifting a 850 kg girder. The girder increases its speed from 0.25 m/s to 1.25 m/s in a distance of 3.5 m. Part 1: How much work is done by gravity? Express your answer with the appropriate units. Part 2: How much work is done by tension? Express your answer...

At what position does a pendulum have its maximum kinetic energy? At what position does a...

At what position does a pendulum have its maximum kinetic energy? At what position does a pendulum system have its maximum potential energy (Earth is in the system) ? Why must the angular displacement of a pendulum be relatively small? If a 3kg bowling ball were suspended from a 5m piece of fishing line, what would be the period of oscillation? Now, if instead of fishing line, that same 3kg bowling ball were suspended from a 5m cable with a...

(a) Calculate the momentum of a 1900 kg elephant charging a hunter at a speed of...

(a) Calculate the momentum of a 1900 kg elephant charging a hunter at a speed of 7.50 m/s. kg·m/s (b) Compare the elephant's momentum with that of a 0.0400 kg bullet fired at a speed of 600 m/s. (momentum of elephant / momentum of bullet) (c) What is the momentum of the 90.0 kg hunter running at 7.50 m/s after missing the elephant?

A bicycle has a kinetic energy of 124 J. What kinetic energy would the bicycle have...

A bicycle has a kinetic energy of 124 J. What kinetic energy would the bicycle have if it had … Show how you got your answer on your pdf copy. … twice the mass and was moving at the same speed? … one-half the mass and was moving with twice the speed? … three times the mass and was moving with one-half the speed? … the same mass and was moving with one-half the speed? … the same mass and...

Two cars collide at an intersection. Car A, with a mass of 1900 kg , is...

Two cars collide at an intersection. Car A, with a mass of 1900 kg , is going from west to east, while car B , of mass 1500 kg , is going from north to south at 12 m/s . As a result of this collision, the two cars become enmeshed and move as one afterwards. In your role as an expert witness, you inspect the scene and determine that, after the collision, the enmeshed cars moved at an angle...

A car is moving at 55 miles per hour. The kinetic energy of that car is...

A car is moving at 55 miles per hour. The kinetic energy of that car is 5 × 105 J.How much energy does the same car have when it moves at 98 miles per hour? Answer in units of J

In which case does the spinning hoop have the most kinetic energy

In both cases shown below a hula hoop with mass M and radius R is spun with the same angular velocity about a vertical axis through its center. In Case 1 the plane of the hoop is parallel to the floor and in Case 2 it is perpendicular.1)In which case does the spinning hoop have the most kinetic energy?Case 1Case 2

What is kinetic energy and how does it relate to the Boltzmann distribution?

Calculate the speed (in m/s) of an electron and a proton with a kinetic energy of...

Calculate the speed (in m/s) of an electron and a proton with a kinetic energy of 1.70 electron volt (eV). (The electron and proton masses are me = 9.11 ✕ 10−31 kg and mp = 1.67 ✕ 10−27 kg. Boltzmann's constant is kB = 1.38 ✕ 10−23 J/K.) (a) an electron m/s (b) a proton m/s (c) Calculate the average translational kinetic energy in eV of a 3.15 ✕ 102 K ideal gas particle. (Recall from Topic 10 that 1...

How does the total Kinetic Energy before the collision compare to the total Kinetic Energy after...

How does the total Kinetic Energy before the collision compare to the total Kinetic Energy after the collision, for the case of inelastic collisions? How does it compare for elastic collisions?