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What would be the horizontal force component of a 500 N force acting at 60 degrees from the horizontal?
A ball moving at 10 m/s makes an off-center elastic collision with another ball of equal mass that is initially at rest. The incoming ball is deflected at an angle of 30° from its original direction of motion. Find the velocity of each ball after the collision.
The great limestone caverns were formed by dripping water. (a) If water droplets of 0.03 mL fall from a height of 5 m at a rate of 10 per minute, what is the average force exerted on the limestone floor by the droplets of water during a 1-min period?
The initial kinetic energy imparted to a 0.022 bullet is 1300 J. Find the range of this projectile when it is fired at an angle such that the range is equals the maximum height attained.
An energy-efficient lightbulb, taking in 10.0 W of power, can produce the same level of brightness as a conventional bulb operating at power 100 W. The lifetime of the energy efficient bulb is 15 000 h and its purchase price is 320.0 php, whereas the conventional bulb has lifetime 1000 h and costs 39php per bulb. Determine the total savings obtained by using one energy-efficient bulb over its lifetime, as opposed to using conventional bulbs over the same time period. Assume an energy cost of 8.4067 php per kWh.
If it takes 5.00 J of work to stretch a Hooke’s-law spring 10.0 cm from its unstressed length, determine the extra work required to stretch it an additional 15.0 cm.
a hailstone of mass 4.67 x10^-3 kg falls vertically at constant speed under influence of gravity and air resistance. What is the work done on the raindrop by the gravitational force and air resistance in joules? (present your answer in this form; x.xxx, x.xxx)
Water flows over hulugan falls, which is 70 high, at an average rate of 2.3 x 10^5 kg/s. If half the potential energy of this water were converted into electric energy, how much power would be produced by these falls
The earth behaves as a huge gyrostat. Comment
Two cars make a perfectly inelastic collision at an intersection. Car 1 has a mass of 1200kg, and car 2 has a mass of 1500kg. Before the collision, car 1 was travelling at 25ms-1 north and car 2 is travelling 15ms-1 west.
a. Calculate the speed and direction of the wreckage immediately after the collision.
b. Calculate the amount of kinetic energy that is transformed during the collision. What forms is this energy transformed into.
