True or false
1. in a forced air heating system, the warm air circulates by convection. t/f
2. in an internal combustion engine, fuel burns outside the engine in chambers called cylinders.
3. solar energy can be changed into thermal energy without any work being done
4. winds are examples of convection currents

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.

i think its d if wrong im sorry