Motion

Explain the difference between distance and displacement.

• Distance is a vector quantity, whereas displacement is a scalar quantity.

• Distance is a scalar quantity, whereas displacement is a vector quantity.

• Distance is a physical quantity, whereas displacement is a mathematical concept.

• Distance is measured in meters, whereas displacement is measured in kilometers.

A car travels 50 km in 2 hours. Calculate its average speed.

• 20 km/h

• 30 km/h

• 40 km/h

• 25 km/h

Describe the motion of an object with constant acceleration.

• The object changes direction randomly

• The object experiences no change in velocity

• The motion of an object with constant acceleration involves changing its velocity by the same amount in equal time intervals.

• The object moves at a constant speed

How does air resistance affect projectile motion?

• Air resistance causes a projectile to travel faster

• Air resistance has no effect on the maximum height of a projectile

• Air resistance increases the horizontal range of a projectile

• Air resistance decreases the horizontal range and maximum height of a projectile.

What are the two components of projectile motion?

• horizontal motion and vertical motion

• forward motion and backward motion

• sideways motion and diagonal motion

• upward motion and downward motion

Explain the concept of range in projectile motion.

• The range is the time taken for the projectile to reach its maximum height

• The range is the vertical distance traveled by the projectile

• The range is the angle at which the projectile is launched

• The range in projectile motion is the horizontal distance traveled by the projectile before hitting the ground.

Calculate the time of flight for a projectile launched at an angle of 30 degrees with an initial velocity of 20 m/s.

• 1.5 seconds

• 2.5 seconds

• 3.0 seconds

• 2.04 seconds

How does the angle of launch affect the range of a projectile?

• Decreasing the angle of launch increases the range of a projectile.

• Increasing the angle of launch decreases the range of a projectile.

• The angle of launch affects the range of a projectile by influencing the vertical and horizontal components of its velocity.

• The angle of launch has no impact on the range of a projectile.

Discuss the factors that can affect the trajectory of a projectile.

• Time of day

• Projectile's weight

• Initial velocity, launch angle, air resistance, gravitational force, and wind speed.

• Color of the projectile

An object is thrown horizontally with an initial velocity of 15 m/s from a height of 10 meters. Calculate the time it takes to reach the ground.

• 0.5 seconds

• 1.43 seconds

• 2.5 seconds

• 3.2 seconds