Tyler's favourite number is 8642, and he tries to fit it into everything he does. If he wishes to do that much work by climbing stairs, how many stairs must he climb if each stair is an average of 18 cm tall and Tyler's mass is 64 kg?

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.