A projectile is launched from ground level and lands back at the same level

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A projectile is launched from ground level and lands back at the same level. It travels

45\,\text{m}

horizontally and reaches a maximum height of

10\,\text{m}

above the launch point. Ignore air resistance and use

g=9.8\,\text{m/s}^2

. Which of the following is closest to the launch angle with respect to the horizontal? (a)

48^{\circ}

(b)

42^{\circ}

(c)

25^{\circ}

(d)

60^{\circ}