Question

A skier leaves a ski jump with a horizontal velocity of 29.4 m/s. The instant before she lands three seconds later, the magnitudes of the horizontal and vertical components of her velocity are: Group of answer choices 29.4 m/s; 29.4 m/s. 41.6 m/s; 41.6 m/s. 29.4 m/s; 41.6 m/s. 0; 29.4 m/s. 29.4 m/s; 0.

Answer 1

Complete Question

A skier leaves a ski jump with a horizontal velocity of 29.4 m/s. The instant before she lands three seconds later, the magnitudes of the horizontal and vertical components of her velocity are: Group of answer choices

A 29.4 m/s; 29.4 m/s.

B 41.6 m/s; 41.6 m/s.

C 29.4 m/s; 41.6 m/s.

D 0; 29.4 m/s.

E 29.4 m/s; 0.

Answer:

Correct option is A

Explanation:

From the question we are told that

     The horizontal velocity is  $v_h = 29.4 \ m/s$

      The time taken for the jump is $t = 3 \ s$

The velocity along the vertical axis is  

      $v_v = g * t$

substituting values

      $v_v = 9.8 * 3$

      $v_v = 29.4 \ m/s$

During the jump the horizontal velocity remains the same as there was a direction change

So the correct option is  A