Vertical projectile motion

Acceleration are defined as ...

Inertia

Impulse

• The product of the resultant force acting on an object and the time the resultant/net force acts on the object

• The mass of the resultant force acting on an object and the time the resultant/net force acts on the object

• The product of the resultant force acting on time and the time the resultant/net force acts on the object

• The product of the resultant force acting on an object and the time the opposite force acts on the object

Answer explanation

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

An________________ object thrown into the air with an initial velocity. It follows a curved path due to its gravity.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-5

A 30 kg iron sphere and a 10 kg aluminium sphere with the same diameter fall freely from the roof of a tall building. Ignore the effects of friction. When the spheres are 5 m above the ground, they have the same ...

• momentum

• kinetic energy

• acceleration

• potential energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Norma hits the cricket ball from the ground straight up in the air. A graph of velocity vs time was drawn. Upwards is taken as positive. Which of the following graphs represents the corresponding position vs time graph?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A stationary rocket on the ground is launched vertically upwards. After 4 s, the rocket’s fuel is used up and it is 225,6 m above the ground. At this instant, the velocity of the rocket is 112,8 m∙s-1. The diagram below shows the path followed by the rocket. Ignore the effects of air friction.

What is the direction at P ?

• Upwards

• Downwards

• Stationary

• No direction

Tags

NGSS.HS-PS2-1

A stationary rocket on the ground is launched vertically upwards. After 4 s, the rocket’s fuel is used up and it is 225,6 m above the ground. At this instant, the velocity of the rocket is 112,8 m∙s-1. The diagram below shows the path followed by the rocket. Ignore the effects of air friction.

What is the direction at Q ?

• Upwards

• Downwards

• Stationary

• No direction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A stationary rocket on the ground is launched vertically upwards. After 4 s, the rocket’s fuel is used up and it is 225,6 m above the ground. At this instant, the velocity of the rocket is 112,8 m∙s-1. The diagram below shows the path followed by the rocket. Ignore the effects of air friction.

At which point (P or Q) is the rocket in free fall?

• P

• Q

• P and Q

• Not sure

Tags

NGSS.MS-PS2-4

TAKING UPWARD MOTION AS POSITIVE, USE EQUATIONS OF MOTION to calculate the time taken from the moment the rocket is launched until it strikes the ground.

• 25 s

• 27,72s

• 30s

• 28,87s

Tags

NGSS.HS-PS2-1