A cart is moving horizontally along a straight line with constant speed of 30 m/s. A projectile is fired from the moving cart in such a way that it will return to the cart after the cart has moved 80 m. At what speed (relative to the cart) and at what angle (to the horizontal) must the projectile be fired?
A. 35.8 m/s at 24 degrees
B. 38.6 m/s at 54 degrees
C. 27 m/s at 35 degrees
D. 24 m/s at 44 degrees

Question

A cart is moving horizontally along a straight line with constant speed of 30 m/s. A projectile is fired from the moving cart in such a way that it will return to the cart after the cart has moved 80 m. At what speed (relative to the cart) and at what angle (to the horizontal) must the projectile be fired?
A. 35.8 m/s at 24 degrees
B. 38.6 m/s at 54 degrees
C. 27 m/s at 35 degrees
D. 24 m/s at 44 degrees

anonymous · Answer

if ypu use Range = V^2 x sin 2$$\Theta$$/g then b is close to the ans

anonymous · Answer

range = V^2 x sin 2Θ /g

anonymous · Answer

@woleraymond  the formula u mentioned above won't work here

anonymous · Answer

so @Siddharth18 , what works? Can you help?

anonymous · Answer

the expression for range will be|dw:1335549877386:dw|