Question

A car is moving with 10m/s speed having 135J kinetic energy. Calculate the mass of the car.

Give correct answer or it will be reported.​

Answer 1

Answer:

mass = 2.70g

Explanation:

kinetic energy = $\frac{1}{2}$ × mass × v²

135 = $\frac{1}{2}$ × mass × 10²

mass = 2.70g

Answer 2

Answer :

Mass of the car is 2.7 kg.

Step-by-step explanation :

Given :

• Speed = 10 m/s

• Kinetic Energy (KE) = 135 J

To find :

• Mass of the car = ?

SoluTion :

As the kinetic energy is given, let's use the same formula to calculate the mass of the car.

→ KE = 1/2mv²

→ 135 = 1/2 × m × 10²

→ 135 = 1/2 × m × 100

→ 135 = 50m

→ m = 135/50

→ m = 2.7 kg

Hence, Mass of the car is 2.7 kg .

More about the topic :

1. kinetic energy (KE) of an object/body is the energy that is produced due to its motion .

2. kinetic energy is given by,

• 1/2 × mv²

where,

• KE is the kinetic energy of the object
• m is the mass of an object
• v is the velocity of an oobject

3. SI unit of kinetic energy is Joule (J) .

4. Kinetic energy is broadly classified into 5 type's ,

• Radiant energy
• Thermal energy
• Sound energy
• Electrical energy
• Mechanical energy

5. Vibrational energy is an example of kinetic energy .