Final answer:
The momentum of the 1500 kg car moving at 64800 m/hour (18 m/s) is 27000 kg·m/s. Its kinetic energy is 243000 J.
Step-by-step explanation:
The student has asked about finding the momentum and kinetic energy of a 1500 kg car moving at a speed of 64800 m/hour. To solve this, we first need to convert the speed to meters per second (m/s) since the standard SI unit for velocity is m/s and not m/hour. To do this, we divide the speed by 3600 (the number of seconds in an hour).
Speed in m/s = 64800 m/hour ÷ 3600 = 18 m/s
Now we can calculate the momentum (p) of the car using the formula p = mv, where m is the mass and v is the velocity.
Momentum (p) = 1500 kg × 18 m/s = 27000 kg·m/s
To find the kinetic energy (KE), we use the formula KE = ½ mv².
Kinetic Energy (KE) = ½ × 1500 kg × (18 m/s)² = 243000 J (joules)
The car's momentum is 27000 kg·m/s, and its kinetic energy is 243000 J.