G9_Post Test 1

The motion of an object with constant acceleration is also known as ______.

• circular motion

• uniform motion

• constant motion

• uniformly accelerated motion

Ryan throws a stone straight up with an initial velocity of 12 m/s. What is its velocity at the highest point?

• 0 m/s

• 9.8 m/s

• 12 m/s

• -12 m/s

Xander throws a stone straight up with an initial velocity of 8 m/s. What is its velocity when it returned to the elevation from where it was thrown?

• 0 m/s

• -8 m/s

• 9.8 m/s

• cannot be determined

Garry throws a stone straight up with an initial velocity of 9 m/s. What is its acceleration at the highest point?

• 0 m/s^2

• 0 m/s^2

• -9.8 m/s^2

• cannot be determined

Which of the following is the motion of objects moving in two dimensions under the influence of gravity?

• Free fall

• Accelerated motion

• Projectile motion

• Uniform motion

Which of the following best describes the horizontal motion of a projectile?

• zero velocity horizontal motion

• constant velocity horizontal motion

• constant acceleration horizontal motion

• uniformly accelerated horizontal motion

A man on top of a building throws a ball horizontally with an initial horizontal velocity of 12 m/s. What is the horizontal velocity of the ball after 3 seconds?

• 1.5 m/s

• 6 m/s

• 12 m/s

• 36 m/s

A man on top of a building throws a ball horizontally with an initial horizontal velocity of 12 m/s. What is the magnitude of the vertical displacement travelled by the ball after 3 seconds?

• 9.8 m

• 19.6 m

• 10 m

• 44.1 m

Neglecting air resistance, the vertical acceleration of a projectile is ___.

• zero

• 1.6 m/s^2

• 9.8 m/s^2

• 10 m/s^2

Projectile follows a ________ path.

• parabolic

• hyperbolic

• three dimensional

• four dimensional