Terms to know
What is a projectile?
an object near the earth's surface that is launched with an initial velocity and moves under the influence of gravity
A racecar is traveling 92.1 m/s due south. After 14.3 seconds, it crosses the finish line travelling 102.1 m/s west. What is the object's acceleration?
9.62 m/s2 at 42.10 north of west
A rock rolls horizontally off a cliff with an initial velocity of 10.0 m/s. It strikes the ground 30.0 m from the base of the cliff. How high is the cliff?
44.1 m
A baseball player hits a ball at 48.4 m/s at 38.0 above the horizontal from an initial height of 1.11 m above the ground. The fence is 122 m from home plate and is 7.25 m tall. Has the player hit a home run?
He has because the ball will be 46.2 m above the ground once it reaches the fence
What is the name for a projectile's path?
Trajectory
A snail travels at 2.0 *10-2 m/s east. Eventually, it travels at 2.3 * 10-2 m/s south. The acceleration of the snail is 3.21 *10-8 m/s2 at 410 west of south. How long does it take the snail from the beginning to end?
9.3 * 105 seconds
A rock rolls horizontally off a cliff with an initial velocity of 10.0 m/s. What is the rock's total velocity just before it hits the ground?
A shot putter throws a shot 22.47 m. If the athlete released the shot at a height of 2.25 m with a velocity of 17.9 m/s at 35.0 to the ground, what was its total velocity as it reached the ground?
19.1 m/s at 39.80 below the horizontal
Describe the vertical velocity of a projectile launched at an angle?
Initial velocity = 0 at the apex of the projectile's trajectory
A car moving at 115 kph at 45.00 south of west reaches a curve in the road. After rounding the curve, the car's velocity is 115 kph west. The car takes 6.50 s to round the curve. What is the car's acceleration?
3.8 m/s2 at 67.50 north of west
A drone is at an altitude of 11.5 m and flying horizontally at a speed of 1.85 kph when it drops your Physics book. If air resistance is negligible, how far does the book travel horizontally before it strikes the ground?
.787 m