Physics Solutions Library

# Physics Solutions Library

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7,031 solutions

Projectile Motion: Positive Launch

#### Q. You’re trying to design a simple catapult, which is capable of firing a projectile at 50 m/s at a launch angle of 45o. If the height of the project...

Solved • Jan 6, 2017

Using Equation Substitution

#### Q. A projectile is launched at an angle of 45 o. If the projectile takes 2 s to reach half its maximum height, what is the launch speed of the project...

Solved • Jan 6, 2017

Symmetrical Launch

#### Q. A projectile is fired from the ground at 50 m/s with a launch angle of 30o. What will the height of the projectile be after 1 s?

Solved • Jan 6, 2017

Vertical Motion and Free Fall

#### Q. An object is thrown vertically into the air at 15 m/s. How long will it take the object to be moving downwards with a speed of 8 m/s?

Solved • Jan 6, 2017

Vertical Motion and Free Fall

#### Q. An object is thrown vertically into the air at 20 m/s. What will the object’s speed be after 0.5 s?

Solved • Jan 6, 2017

Vertical Motion and Free Fall

#### Q. An object is thrown vertically into the air at 5 m/s. What is the maximum height the object will reach?

Solved • Jan 6, 2017

Kinematics Equations

#### Q. Usain Bolt can run the 100 m dash in 9.58s. Assuming his acceleration is constant during the sprint, what speed would Usain cross the finish line at?

Solved • Jan 6, 2017