HI, I really need help with this assignment for Physics:

Kepler’s Kingdom

Equations: d = v x t d = vot + ½ at2 vf 2= vo2 + 2ad


1. Ernie, a cute little dachshund, runs after a ball. After accelerating, he chases the ball over a distance of 50 m in 10 seconds. What was his average velocity during the 10 seconds?








2. A race care slows with an average acceleration of –8.0 m/s2 (negative sign shows deceleration). The car’s initial velocity is 100.0 m/s, how far does it travel in 12.0 seconds?







3. A position-time graph is shown at right.

• What was the velocity of the object between hours 2 and 4?



• How far did this object travel in that time? Show any calculations necessary.




 
Newton’s Nook

Equations: Fg = Gm1m2/d2 G = 6.67 E-11 Nm2/kg2
m1v1o + m2v2o = m1v1f + m2v2f


1. What is 6.8 kg cat and a 82.0 kg veterinarian standing 1.3 m away?






2. A Hummer and a VW Beetle traveling at equal speeds have a head-on collision. Assuming that momentum is conserved:
a. Which vehicle will experience the greater force of impact? Justify your answer.






b. Which vehicle will experience the greater change in momentum? Justify your answer.






c. Which vehicle will experience the greater acceleration? Justify your answer.






3. Explain the meaning of Newton’s 1st Law and provide an example.



Attached pic is for the position vs time graph
Thanks.