Acceleration is the change of ____ divided by time (A) mass (B) force (C) veloci

Question

Acceleration is the change of ____ divided by time (A) mass (B) force (C) velocity (D) displacement Which of the following is a unit of force? (A) Kg (B) Km/hr (C) Newton (D) m/s^2 Which of the following is not a vector quantity? (A) force (B) velocity (C) displacement (D) mass If the mass of an object doubles, its weight ___ According to Newton's ____ law, an object with no net force acting on it remains at rest or moves with constant speed on a straight line. (A) first (B) second (C) third (D)none Newton's ____ law states that the acceleration of a body is directly proportional to the net force on it and inversely proportional to its mass (A) first (B) second (C) third (D) none A net force was applied to a shopping cart carrying grocery items. The net force was doubled, but the acceleration of the cart remained the same. Then, the total mass of the cart and its contents must be ____ (A) halved (B) quadrupled (C) doubled (D) tripled A car changes its velocity from an initial value of 8 m/s to a final value of 48 m/s within 10 seconds. The acceleration of the car is ____ m/s^2. (A) 1 (B) 2 (C) 3 (D) 4 The acceleration due to gravity is lower on the moon than it is on the earth. Then, which of the following is true about the mass and weight of an astronaut on the Moon compared to on Earth? (A) Mass less, weight is same (B) Mass is same weight is less (C) Both mass and weight are less (D) Both mass and weight are the same Action and reaction forces act on ____ (A) the same object (B) different objects (C) both A and B (D) neither A nor B When a net force of 20 N is applied to a box on a flat table, the box accelerates on the table at 2m/s^2. What will be the acceleration of the same box if the net force was tripled to 60 N? (A)8m/s^2 (B) 2m/s^2 (C) 6 m/s^2 (D) 30 m/s^2 A 30 N force and a 40 N force act on an object. If the forces are perpendicular to each other, the net force acting on the object will be ____ (A) 10 N (B) 70 N (C) 50 N (D) 1200 N A ball is dropped from rest from a height of 80 m. What time d the ball take to strike the ground ? (A) 1 s (B) 2 s (C) 3 s (D) 4 s

Explanation / Answer

1) correct option C velocity

2) Correct option C Newton

3) Mass is scalar quantity correct option D

4) W = mg

W' = 2mg

W' = 2W

So weight is doubled.

Corrrect option is A

5) First law

6) Second law

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