Вопрос
Choose the corect answer: After a cannonbal I is fired into frictionless space , the amount of force needed to keep it going equals
Решения
4.5
(270 Голоса)
Ладимир
профессионал · Репетитор 6 лет
Ответ
Zero
Объяснение
## Step 1The problem is based on Newton's first law of motion, also known as the law of inertia. This law states that an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.## Step 2In this case, the cannonball is fired into frictionless space. This means there is no friction or any other force acting on the cannonball to change its state of motion.## Step 3Since there is no force acting on the cannonball to change its state of motion, the amount of force needed to keep it going is zero.