Chini is sliding blocks of different materials down a steel ramp. All of the blocks have similar sizes and masses. The table shows the coefficient of friction for several materials when sliding on steel. The larger the coefficient of friction, the greater the force of friction. In which order would the blocks reach the
bottom of the ramp?
Material
Coefficient
of friction
aluminum
chromium
glass
0.25
0.21
0.12
steel
0.23
titanium
vanadium alloy
0.31
Drag the materials into the correct order from the material that will slide down the ramp the fastest to the material that will slide down the ramp the
slowest
chromium
glass
aluminum
titanium vanadium alloy
steel

Material

Coefficient

of friction

aluminum

chromium

glass

0.25

0.21

0.12

steel

0.23

titanium

vanadium alloy

0.31

Drag the materials into the correct order from the material that will slide down the ramp the fastest to the material that will slide down the ramp the

slowest

chromium

glass

aluminum

titanium vanadium alloy

steel

Explanation:

what are the statements

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied