Scientists aboard the international space station are threatened by a 2.8 kg meteor hurtling toward them at 5.4 x 103 m/s. they deploy an enormous rubber band to catch the meteor.

the rubber band stretches 193 m as it stops the meteor and saves the day. how much average force is applied to the meteor?

a) 3.8 x 104 n

b) 5.2 x 104 n

c) 1.3 x 105 n

d) 2.1 x 105 n

e) 4.7 x 106 n

c) 1.3 X 10⁵ N

Explanation:

Step 1: From equation of motion; V² = U² +2as

where, U  and V are initial and final velocity respectively,

a is the acceleration and s is the distance traveled

(5400)² = 0² +2*a*193

a = (5400)²/ (386)

a = 75544.04 m/s²

Step 2: calculate the maximum force applied to the meteor

= 211,523.312 N

Step 3: calculate the average force applied to the meteor

= 105,761.7 N

1.1 X 10⁵ N

The nearest option is C

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

1/0.14nm = 10^10/1.4 a lot