what is -2 to the secound power?

Question

negative numbers with exponents

Answer 1

(-2)^2=4

..................

Answer 2

 

- A ball is traveling in 2-d according to the following equations: 

x(t) = (4 + 17t2

) m.

y(t) = (3 + 2t) m.

a. Calculate the average velocity of the ball between t=0 and t=1 s.

b. What is the speed of the ball and its direction at t=1 s. 

c. Calculate the average acceleration of the ball between t=0 and t=1 s.

d. What is the acceleration of the ball at t=1s?

e. What is the magnitude and direction of the acceleration of the ball at t=1 s.