core 3

an object acceleration may be...

• slowing down

• gaining speed

• changing direction

• all of above

oliver walks 3 km north, then turns and walk 4 km east, what is his displacement?

• 2.65 km east

• 5 km northeast

• 1 km east

• 7 km northeast

A car traveled 60 km in 2 hours, 84 km in the next one hour, and then 68 km in 2 hours before reaching its destination. what was the car average speed?

• 42 km/hr

• 212 km/hr

• 148 km/hr

• 1060 km/hr

a women walks barefoot across the street, burning her feet each time they touch the pavement

• conduction

• convection

• radiation

• stationary

if your hand touches a hot frying pan, why does your hand feel hotter?

• heat goes into your hand

• heat leaves your hand

• coldness goes in your hand

• coldness leaves your hand

you sneak up behind one of your and throw a cold ice pack down his back he runs.

• convection

• conduction

• radiation

• stationary

A girl walks one mile everyday for exercise, leaving her house at 9pm, and returning to her front porch at 9:25. What is her displacement of her walk?

• 0 miles

• 1 miles

• 25 minutes

• None of these

Who was sir isaac Newton?

• A scientist

• A artist

• An dancer

• describes the effects of force

A volume of 24.3 CM2 and a mass of 217.0 grams. What is the density of the unknown?

• 8.93004 g/m

• 2.31 m/g

• 4.56 g/cm

• 8.93 g/cm3

The density of carbon tetrachloride is 1.59 g/ml. Calculate the volume of 26.4 grams of the liquid

• 16.0377 K/m

• 14.7o m/l

• 16.6g/ml

• 15 grams