Objects launched at an angle

Answer Key - Grade 11 Science Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   A spring toy launches a ball with a vertical part of 14.7 m/s. With no air, how long does it take to reach the top, Bo?

   1.5 s
2. 2.

   A spring toy launches a ball with a vertical part of 24.5 m/s. With no air, how long does it take to reach the top, Esme?

   2.5 s
4. 3.

   In the trajectory grid, what does the vertical arrow show at the top of the arc, Jun?

   • 9.8 m/s upward
   • 9.8 m/s downward
   • 0 m/s
5. 4.

   In the trajectory grid, what happens to the horizontal arrow along the arc, Kira?

   Use the picture in question 3.

   • It drops to 0 at the top
   • It grows
   • It stays at 3 m/s
6. 5.

   In the trajectory grid, how fast is the ball moving at the top, Luz?

   Use the picture in question 3.

   • 3 m/s, sideways
   • 0 m/s; it has stopped
   • 9.8 m/s
7. 6.

   A ball is launched at 10 m/s, 30° above the ground. What is its vertical part, Milo?

   • 5 m/s
   • 8.7 m/s
   • 10 m/s
8. 7.

   A ball is launched at 10 m/s, 60° above the ground. What is its horizontal part, Noah?

   • 6 m/s
   • 8.7 m/s
   • 5 m/s
9. 8.

   A ball is launched at 10 m/s straight up, 90° above the ground. What is its horizontal part, Pia?

   • 10 m/s
   • 5 m/s
   • 0 m/s
10. 9.

    A ball reaches the top of its arc after 1 s. With no air, when does it land on level ground, Ren?

    • At 4 s
    • At 2 s
    • At 1 s
11. 10.

    Where along its path is a ball at its highest, on level ground with no air, Zee?

    • At the very end
    • Right at the start
    • Halfway across