Answer:
The maximum height reached by the toy rocket is 0.73 meters.
Explanation:
It is given that,
Mass of the toy rocket, m = 0.8 kg
It is projected at an angle of 45 degrees from ground level. The kinetic energy of the rocket is used to find the velocity with which it was projected as :
u = 10.12 m/s
When it reaches to a maximum height, its final velocity will be equal to 0, v = 0
Using third equation of motion to find it as :
a = -g
s is the maximum height reached by the toy rocket
In vertical direction,
s = 0.36 meters
So, the maximum height reached by the toy rocket is 0.73 meters. Hence, this is the required solution.
Push ups are harder because when doing pushups you are building your muscle strength by pushing up and going down but curl ups you are on the floor and using your body to help pull yourself up each time you go up and down
Solid
Solids have a definite shape and size (volume)
Liquids have a definite size but no definite shape
Gasses have no definite shape or size
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, n the same direction as the net force and is inversely proportional to the mass of an object. Its Newtons second law
Twice the mass means one-half the acceleration , if the same net force acts on both objects
hope this helps
Please find attached photograph for your answer.