Question

3. A 142 g baseball is thrown at a speed of 42.9 m/s. What is the kinetic energy of the baseball at this moment?

261 )
131 )
O 6090 )
505 )
Kinetic energy (KE) is defined by the equation KE = { mu?.
Point
0
11
4. Harriet is practicing archery. As she draws back an arrow, the arrow has 34.3 of elastic notretia
have when it is about to hit the ground?

Answer 1

Answer: For question 1

131 is the correct answer

KE = 1/2 mv^2

Step-by-step explanation:

Answer 2

kinetic energy=1/2mv^2
=1/2(142*10^-3)(42.9)^2=130.6=131J