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3. A projectile leaves the ground with initial velocity of 30 m/s, at an angle of θ above the
horizontal. At maximum height, the velocity of the projectile is half of its initial velocity.
a) Calculate the angle, θ of the projectile motion [2]
b) Calculate the time, ttotal needed for the projectile to reach the ground. [3]
The purpose of banking a curved road is [Best answer]
(A) to provide a force supporting the weight of
the car.
(B) to provide the centrifugal force.
(C) to provide the centripetal force.
(D) to provide the frictional force.
The total mechanical energy of a simple pendulum of length 50.0 cm takes 5s to make 10 complete back and forth motion. Where t=0.8s and m= 0.05kg
think/observe 3 applications of the laws of motion that you experience in everyday life. Take a pictures of this application and explain which laws are being applied and their importance
A man wanted to measure the height of a building by dropping a bob from the top. If the bob hits the ground 2.30 seconds after it was dropped, how high is the building?
The ultraviolet rays that cause sunburn is called UV rays. They have a wavelength of
approximately 300 nanometers (3.0 x 10-7 m). What is the frequency of a UV ray?
Two boys, Christian and John having the same mass, are on roller skates facing each other. Christian pushes John who moves away at a speed of 1.5 m/s. What is Christian’s speed?
A train and a car have a head-on collision? Which vehicle experiences the greater force of impact? Which experiences the greater impulse? Which experiences the greater momentum change? Which experiences greater acceleration after the impact?
Two 33ohms resistor are connected in parallel followed by two more 33ohms resistor connected in parallel. what value of a single resistor will be used to replace this 4 resistor
A car round a circular track takes 120seconds to do a lap of 6km. What is the speed of km/hr and m/s
