Mass of the dart = 0.01 kg
Speed at which the dart is thrown = 20 m/s
Kinetic Energy = (1/2) * mass * speed * speed
= (1/2) * (0.01) * (20) * (20) Joules
= (400 *0.01)/2 Joules
= 4/2 Joules
= 2 Joules
So the kinetic energy of the dart is 2 Joules. I hope this is the correct answer and it has helped you.
This problem we can represent as right triangle where we can use basic trygonometric functions.
in this case we have largest side (hypothenuse) of the triangle and we have one angle. The angle we got is the one between side of triangle that is horizontal with the ground and the hypothenuse, meaning that we need sin function to connect relation between angle, known side lenght and unknown side lenght.
sin(alpha) = (side of triangle oposite from observed angle)/(hypothenuse)
sin(41) = x/1503
x = 1503*sin41 = 986.06 meters
Answer is 986.06 meters
Answer:
can u tell what you are doing
