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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?

A. 45°
B. 55°
C. 60°
D. 65°
E. 70°

Problem 2

Two bullets are released with launch angles of 20° and 70° respectively. The first bullet and the second finally reach the ground at the same point. If the initial speed of the first bullet is 15 m/s, what is the initial speed of the second?

A. 5 m/s
B. 10 m/s
C. 15 m/s
D. 20 m/s
E. 30 m/s

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