Answer:
4.36 seconds
Explanation:
According to the question;
- Force is 550 N
- Mass of the car is 1200 kg
- Velocity of the car is 2.0 m/s
We are needed to find the time the car must the tow track pull the car.
- From Newton's second law of motion;
- Impulsive force, F = Mv÷t , where m is the mass, v is the velocity and t is the time.
Rearranging the formula;
t = mv ÷ F
Thus;
Time = (1200 kg × 2.0 m/s²) ÷ 550 N
= 4.36 seconds
Thus, the time needed to pull the car is 4.36 seconds
Answer:
Tension and Gravitational Force
Explanation:
The question says that a monkey is hanging, he neither drops down to the ground nor moves up. He keeps hanging on a vertical vine.
Since, the monkey is hanging, two forces acts on the monkey, one force is due to his weight, i.e., the gravitational force which tends to pull him downwards and the other is due to the tension developed in the string which is in upward direction.
Thus to keep the monkey in the hanging state both the forces must counter balance each other and maintains the system 's equilibrium.
Therefore, both the forces must be equal.
Cars 'A' and 'C' look like they're moving at the same speed. If their tracks are parallel, then they're also moving with the same velocity.
QUICK ANSWER
The collision between two gas molecules or billiard balls can be approximated as elastic collisions. Elastic collisions are exchanges of kinetic energy between two bodies having different reference frames in which the total kinetic energy of the two bodies after collision is equal to the energy before collision.'
