The acceleration of a particle is inversely proportional to the square of the time since it was fired. if the acceleration of the particle 20 seconds after it was fired was 5 m/sec2, what was its acceleration 5 seconds later?

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?