Physics Answers

A curve along the barangay is to be designed for motorela moving at 30 kilometers per hour. Find

the angle of banking if the radius of the curve is 20 m.

A stone fall from a railroad overpass which is 36m high into the path of a train which is

approaching the overpass with uniform speed. If the stone falls when the train is 50m away from

the overpass and the stone hits the ground just as the train arrives at that spot, how fast is the

train (in kilometer per hour) moving?

Determine the resultant of the following: 9.0 N at 40°, 8.0 N at 120°, and 14.0 N at 22 0°, all

angles being measured with the positive x-axis. Use component method in finding the resultant.

A cue ball on a pool table is hit with the cue stick in one corner of the table and rolls to the opposite corner.  The mass of the ball is 0.17 kg and it starts rolling at a speed of 3.6 m/s.  By the time it reaches the opposite corner of the table, the ball has a kinetic energy of 0.65 J.  Determine the following: (a) the initial kinetic energy, (b) the speed of the ball at the opposite corner of the table, and (c) the work done by friction as the ball rolls from one corner to the other.

Four equal-magnitude point charges (3.0 C) are placed at the corners of a square that is 40 cm on a side. Two, diagonally opposite each other, are positive, and the other two are negative. Find the force on either negative charge.

A ball of mass 1000kg is dropped from a height of 5m and rebounded to a height of 25cm calculate:(I) it's kinetic energy just before impact (ii) its initial rebounce velocity and kinetic energy

What change in velocity would be produced on a body of mass 4kg if a constant force of 16N acts on it for 2s

A Boy applied a force of 20N at an angle of 60 to the horizontal in order to move a load. Through a horizontal distance of 10m. Calculate the work by the day.

A particle makes 240 revolution per minute (rpm)on a circle of radius 3.5.find it's

Angular velocity

Linear velocity

Linear acceleration

A rocket, initially at rest, is fired vertically with an upward acceleration of 10m/s². At an altitude of .50km, the engine of the rocket cuts off. What is the maximum altitude it achieves?