Exam 4: Motion in Two and Three Dimensions

A large cannon is fired from ground level over level ground at an angle of 30 above the horizontal. The muzzle speed is 980 m/s. Neglecting air resistance, the projectile will travel what horizontal distance before striking the ground?

Acceleration is defined as:

An object, tied to a string, moves in a circle at constant speed on a horizontal surface as shown. The direction of the displacement of this object, as it travels from W to X is:

For a biological sample in a 1.0-m radius centrifuge to have a centripetal acceleration of 25g its speed must be:

Two bodies are falling with negligible air resistance, side by side, above a horizontal plane. If one of the bodies is given an additional horizontal acceleration during its descent, it:

Which of the following is a vector quantity?

A boat is able to move through still water at 20 m/s. It makes a round trip to a town 3.0 km upstream. If the river flows at 5 m/s, the time required for this round trip is: