A bike rider pedals with constant acceleration to reach a velocity of 7.5 (vf) m/s over a time of 4.5 s (t). during the period of acceleration, the bike's displacement is 19 m (d). what was the initial velocity of the bike?

The train departed 100 meters in 10 seconds How far has the train gone in the last 2 seconds

Block 1, of mass m1 = 2.70 kg, moves along a frictionless air track with speed v1 = 27.0 m/s. It collides with block 2, of mass m2 = 53.0 kg, which was initially at rest. The blocks stick together after the collision.

A specimen of aluminum having a rectangular cross section 9.9 mm * 12.4 mm (0.3898 in. * 0.4882 in.) is pulled in tension with 35900 N (8071 lbf) force, producing only elastic deformation. The elastic modulus for aluminum is 69 GPa (or 10 * 106 psi).

Why do metals conduct electricity

What does a planet need in order to retain an atmosphere? How does an atmosphere affect the surface of a planet and the ability of life to exist?

If a bar magnet is broken into two pieces, each of the resulting pieces

Two passengers leave the airport at Kansas City, Missouri. One flies to Los Angeles, California, in 3.5 hr and the other flies in the opposite direction to New York City in 3.5 hr.

What is the term for the basic unit of electric current? The basic unit of electric current is the.

When a sailboat overtakes a powerboat, which vessel is the stand-on vessel?

Both matter and energy can eneter and exit which of the following systems? A. open only B. both open and closed C. isolated only D. both closed and isolated