sci ( lesson 1)

What force enables objects to reach the ground?

• Magnetic Force

• Tension Force

• Gravitational Force

• Frictional Force

What is the shape of the trajectory of a projectile?

• Elliptical

• Hyperbolic

• Parabolic

• Circular

Which of the following composed the two linear motions of a projectile?

• Horizontal and Circular Motion

• Vertical and Curvilinear Motion

• Horizontal and Vertical Motion

• Vertical and Circular Motion

What is referred to as an object that is given an initial velocity and is then acted solely upon by gravitational force?

• Project

• Projectile

• Trajectory

• Target

What do you call the path followed by an object under projectile motion?

• Trajectory

• Projectile

• Target

• Project

What happens to the vertical velocity of an object as it travels through the air?

• Changes continuously

• Remains the same

• Gradually increases

• Gradually decreases

What happens to the horizontal velocity of an object as it travels through the air?

If you throw a baseball straight up, what will its vertical velocity be at the highest point?

• 9.8m/s

• -9.8m/s^2

• 0m/s^2

• 0m/s

What is the acceleration of a baseball thrown to the air at an angle of 45 degrees with respect to the horizontal as it returns to the ground?

• 0m/s

• 9.8m/s^2

• -9.8m/s^2

• 0m/s^2

What happens to the horizontal velocity of an object as it travels through the air?