Answer: The work done is 245000 J.
Explanation:
The formula for the force due to the weight of the object is as follows;
Here, m is the mass of the object and g is the acceleration due to gravity.
Put m=500 kg and g=9.8 meter per second.
The formula for the work done is as follows;
Here, F is the force and s is the displacement.
Put F=4900 N and s=50.0 m.
Therefore, the work done is 245000 J.
Answer:

Explanation:
Relative horizontal velocity of plane with respect to the car is given as

so we have


now we have



Now time taken by the object to drop the vertical height is given as



so the distance of the car must be



Angle of the car with horizontal is given as




ANSWER:
Ca(OH)2 shows a decrease of solubility with the increase of temperature.
Hope it helps u! :)
Choice-B is the true one.
Earth's gravity and the satellite's velocity keeps it so that it stays in orbit. (there is a more complicated side, too...)