# Fisika Study Center

## QNS Projectile Motion Angles and Distances

physics.fisikastudycenter.com_2021 Projectile motion distances and angles.

Problem 1

Two bullets are released with launch angles of 35° and β respectively, which β > 35°. The first bullet and the second finally reach the ground at the same point. If the initial speed of the first bullet equals the second, what is the angle β?

## QNS Mechanics Energy Conservation

physics.fisikastudycenter.com_2021 Mechanics energy conservation.

Problem

A particle of 1 kg of masses released from the top of a building with speed of 2 m/s at the end as shown in the figure. The mechanics energy of particle at 6 m before reaching the ground is....(g = 10 m/s2)

A. 2 joule
B. 120 joule
C. 122 joule
D. 240 joule
E. 244 joule

(Use mechanics energy conservation concepts to solve the problem. ME at 12 m equals  ME at 6 m.)

## Kinetics Energy vs Gravitational Potential Energy of a Coconut

physics.fisikastudycenter.com_2021 Kinetics energy vs Potential Energy quantities and ratios, questions only, no solutions.

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