SCIENCE 9 Q4 Lesson 1 QUIZ 1

If a freely falling ball is somehow equipped with a speedometer, by how much would its speed reading increase for every second?

• 0 m/s

• 9.8 m/s

• 10 m/s

• 20 m/s

A soccer ball is hit vertically upward by a player. What is its acceleration after 1 second?

• 0 m/s2

• 1 m/s2

• 9.8 m/s2

• -9.8 m/s2

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

• Motion

• constant motion

• uniform motion

• uniformly accelerated motion

A toy is dropped from the top of a 100 m building. What is the ball’s initial velocity?

• 0 m/s

• 9.8 m/s

• 10 m/s

• 15 m/s

What is the only force that acts upon projectiles?

• Motion

• Gravity

• inertia

• velocity

Which illustrates projectile motion?

• Running

• Driving a car

• Kicking a soccer ball

• Dropping a stone from the top of the building

What is the horizontal distance covered by the ball thrown horizontally at 10 m/s if its time of flight is 3.0 s?

• 10 m

• 20 m

• 30 m

• 35 m

A man drives his motorcycle horizontally off the end of a cliff and lands in the water 2 s later. How high is the cliff?

• 19.6 m

• 15.6 m

• 17.9 m

• 20 m

A marble is launched horizontally from a table at 12 m/s and lands 5 m away from the edge of the table. What is the time of flight of the marble?

• 0.10 s

• 0.42 s

• 0.5 s

• 0.45 s

What is the direction of acceleration for any projectile?

• Up

• down

• left

• right