Home
/
Physics
/
a ball is thrown horizontally from a cliff as shown. the effect of air resistance is negligible. a student makes the following

Question

A ball is thrown horizontally from a cliff as shown. The effect of air resistance is negligible. A student makes the following statements about the ball. The vertical speed of the ball increases as it falls. II The vertical acceleration of the ball Increases as it falls. III The vertical force on the ball increases as it falls. Which of the statements is/are correct? Al only B II only Cland II only D II and III only EI, II and III

Answer

4.4 (172 Votes)
Verificación de expertos
Anna Advanced · Tutor for 1 years

Answer

A (I only)

Explanation

## Step 1: We need to evaluate each statement based on the principles of physics.## Step 2:Statement I: The vertical speed of the ball increases as it falls. This statement is correct. When the ball is thrown horizontally, it starts with zero vertical velocity. However, due to the force of gravity, it starts accelerating downwards, increasing its vertical speed.### The formula for the vertical speed after time seconds is given by , where is the acceleration due to gravity.## Step 3:Statement II: The vertical acceleration of the ball increases as it falls. This statement is incorrect. The vertical acceleration of the ball is due to gravity, which is a constant. It does not increase or decrease as the ball falls.## Step 4:Statement III: The vertical force on the ball increases as it falls. This statement is also incorrect. The only vertical force acting on the ball is gravity, which remains constant as the ball falls. The force does not increase with time or distance.