Exam 3: Equilibrium and Linear Motion

The muzzle velocity of a bullet fired from a new rifle is 100 m/s. Neglecting air resistance, at the end of one second a bullet fired straight up into the air will have traveled a distance of

In each second of fall, the distance a freely falling object will fall is

If you drop an object, it will accelerate downward at a rate of 9.8 meters per second per second. If you instead throw it downwards, its acceleration (in the absence of air resistance) will be

A man leans over the edge of a cliff and throws a rock upward at 4.9 m/s. Neglecting air resistance, two seconds later the rock's speed is

If a projectile is fired straight up at a speed of 10 m/s, the total time to return to its starting position is about

If a projectile is fired straight up at a speed of 10 m/s, the time it takes to reach the top of its path is about

While a car travels around a circular track at a constant speed its

A ball is thrown 125 meters upward and then falls the same distance back to Earth. Neglecting air resistance, its total time in the air is

While an object near the earth's surface is in free fall , its

An object, at rest near the surface of a distant planet, starts to fall freely . If the acceleration there is twice that of the earth, its speed one second later would be

A pot falls from a ledge and hits the ground 45 m below. The speed with which it hits the ground is

Which of the following is not a vector quantity?

An airplane flies at 100 km/h in still air.. If it flies into a 10 km/h headwind, its groundspeed is

Someone standing at the edge of a cliff throws one ball straight up and another ball straight down at the same initial speed. Neglecting air resistance, the ball to hit the ground below the cliff with the Greater speed will be

Galileo's use of inclined planes allowed him to effectively

Consider drops of water that leak at a steady rate from a dripping faucet. As the drops fall they

When a rock thrown straight upwards gets to the exact top of its path, its

A bullet is fired straight down from the top of a high cliff. Neglecting air resistance, the acceleration of the bullet in meters per second per second

A ball is thrown upwards and returns to the same position. Compared with its original speed after release, its speed when it returns is about

Starting from rest, the distance a freely-falling object will fall in 0.5 second is about