Force F: (3x2 N)ˆi (4 N)ˆj, with x in meters, acts on a particle, changing only the kinetic energy of the particle. How much work is done on the particle as it moves from co- ordinates (2 m, 3 m) to (3 m, 0 m)?

Write short note on the following ; collision theory, rotation angle and angular velocity, centripetal acceleration, coriolis force, and newton's law of gravitation.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.