An object fall from the top of the building 50m high.

1. How long it take to fall?

2. What is it speed when hate the ground?

using g=10 meter per second

The use of force to move an object is

A police car moving at 36.0 m/s is chasing a speeding motorist traveling at 30.0 m/s. The police car has a siren that emits sound at 3550 Hz. What is the frequency that the motorist hears?

How many moons does Venus have? a. 3 b. 6 c. 0 d. 12

A series RLC circuit with a resistance of 121.0 Ω has a resonance angular frequency of 5.1 ✕ 105 rad/s. At resonance, the voltages across the resistor and inductor are 60.0 V and 40.0 V, respectively.

What type of wave is sound? A. Gamma B. electromagnetic C. light D. pressure

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching

Why are glass fibers stronger than bulk glass?

1. A 2000kg truck at rest accelerates to 45m/s in 7 seconds. What is its change in kinetic energy?

The speed with which force is developed by skeletal muscles is determined by the

What aviation first is paul maccready credited with