Answer:
F = 1300 N
Explanation:
F = mv²/R = 0.4(100²)/3 = 1333.3333...
question 1, A
Question 2, D
Question 3, B
hope this helps :)
C
they involve breaking and making chemical bonds
It's A 17 km because the total km walked is 17.
Joes displacement is 54m