Hortizontal velocity will not alter and thus will be 40 m/s. Now considering the vertical velocity, after 3 seconds because of accelearation due to gravity the vertical velocity would be ‘gt' that is 10 (approx) m/s^2 × 3 s= 30 m/s. Now we have both vertical and horizontal components. 40 as horizontal and 30 as vertical. The resultant would be 50 m/s with an angle of 37 degree to horizontal.
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Answer:
Hortizontal velocity will not alter and thus will be 40 m/s. Now considering the vertical velocity, after 3 seconds because of accelearation due to gravity the vertical velocity would be ‘gt' that is 10 (approx) m/s^2 × 3 s= 30 m/s. Now we have both vertical and horizontal components. 40 as horizontal and 30 as vertical. The resultant would be 50 m/s with an angle of 37 degree to horizontal.