2 Points
In an isolated system, two cars, each with a mass of 2,500 kg, collide. Car 1 is
initially at rest, while Car 2 was moving at 20 m/s. What is their speed after
the collision?
A. 5 m/s
B. 25 m/s
C. 10 m/s
D. 20 m/s
SUOMI

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction

Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s