Projectile Motion
A baseball is launched horizontally from a height of 1.8 m. The baseball travels 0.5 m before hitting the ground. How fast is the baseball moving horizontally, rounded to the nearest hundredth? [Blank] m/s
.82
A projectile is launched at a 30° angle relative to the ground. The projectile has an initial velocity of 15 m/s and travels through the air for 2 seconds. The horizontal displacement of the projectile, rounded to the nearest hundredth, is [Blank] m.
25.98
A projectile is launched horizontally from a height of 8.0 m. The projectile travels 6.5 m before hitting the ground. The velocity of the projectile the moment it was launched, rounded to the nearest hundredth, is [Blank] m/s.
5.09
Ingrid kicks a football with an initial velocity of 12 m/s at an angle of 45° relative to the ground. The horizontal component of the initial velocity to the nearest tenth is [Blank] m/s.
8.5
In the formula vy = ay△t, what is the value of ay for an object in projectile motion?
A - -9.8 m/s2
Barry is conducting an experiment and rolls a tennis ball down a ramp. Which best describes the motion of the tennis ball?
A - It does not exhibit projectile motion and follows a straight path down the ramp.
Charlotte throws a paper airplane into the air, and it lands on the ground. Which best explains why this is an example of projectile motion?
A - The paper airplane's motion is due to horizontal inertia and the vertical pull of gravity.
Which is an example of projectile motion?
A - a person throwing a rock
Quinn launches two projectiles, X and Y, at two different speeds. Which best compares the motion of the projectiles?
B - The vertical velocity of projectile Y is changing, and the horizontal velocity of projectile X is constant.
Mohammed made a chart to list examples and nonexamples of projectile motion. Which best completes the chart?
B - a kite flying on a string
Objects that exhibit projectile motion follow a [Blank] path.
B - parabolic
Projectile motion is a combination of which two types of motion?
C - horizontal and vertical
Rosa uses the formula (vi cos)t to do a calculation. Which value is Rosa most likely trying to find?
C - the horizontal displacement of a projectile launched at an angle
Lexy throws a dart with an initial velocity of 25 m/s at an angle of 60° relative to the ground. What is the approximate vertical component of the initial velocity?
D - 21.7 m/s
A basketball rolls off a deck that is 3.2 m from the pavement. The basketball lands 0.75 m from the edge of the deck. How fast was the basketball rolling? Seema lists the given values in a chart and determines that the unknown value is vx. Which describes Seema's error?
D - The value of y should be -3.2 m.
The formulas used to analyze the horizontal and vertical motion of projectiles launched at an angle involve the use of which function(s)?
D - cosine and sine
Which formula can be used to calculate the horizontal displacement of a horizontally launched projectile?
D - △x = vx△t
