Speed of a car in the first half of its trip is 30km/h. What should be its speed in the next half (same distance) such that its speed in the entire trip is 42 km/h.

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

Which changes of state do the labels represent? a: b: c:

Positive ions differ from neutral atoms in that