Sir Eman's Online Physics Quiz No. 03

convert 30 min to hours then you have 0.5 hr.

10km/0.5hr gives 20 kph

Free fall refers to the motion of an object when it is only influenced by gravity, with no other forces acting upon it. In free fall, the object experiences a constant acceleration due to gravity, causing it to fall towards the Earth without any resistance or external forces. This motion is commonly observed when an object is dropped from a height or when a skydiver jumps out of a plane. During free fall, the object's velocity increases continuously, leading to a rapid increase in its speed as it falls downwards.

nasa notes iyan. tingin-tingin na lang.

nasa notes iyan. tingin-tingin na lang.

free fall. acceleration due to free fall for any of the bullets is the same, 9.8 m/s^2

ang nagsagot ng D ay may minus. seriously =]

acceleration due to gravity is 'almost' constant at the surface of the earth. so raising or lowering the height of releasing an object would have no significant effect. =]

The apple falls from a height of 5 meters, and we know that the acceleration due to gravity is approximately 9.8 m/s^2. Using the equation v^2 = u^2 + 2as, where v is the final velocity, u is the initial velocity (which is 0 in this case), a is the acceleration, and s is the distance fallen, we can calculate the final velocity. Plugging in the values, we get v^2 = 0 + 2(9.8)(5), which simplifies to v^2 = 98. Solving for v gives us v ≈ √98 ≈ 9.9 m/s, which is closest to 10 m/s.

not-available-via-ai

common sense na lang ang paganahin naten dito.
the rock is in freefall therefore it a = 10 m/s^2
after moving upward for 1 second, it decelerates, thus reducing its speed by about 10 m/s

Set 1 na ang pinakamalapit. As the object falls, its speed increases and its acceleration remains at a constant
9.8 m/s^2

the d vs t graph for an object accelerating uniformly will look like that. check notes. =]

acceleration due to gravity is 'almost' constant at the surface of the earth. so constant acceleration means constant increase in velocity =]

common sense na lang ang paganahin naten dito.
the rock is in freefall therefore it a = 10 m/s^2
after falling for 1 second, it gains a speed of 10 m/s

When a projectile is fired straight up, it will reach its highest point and then fall back down due to gravity. The time it takes to reach the highest point is equal to the time it takes to fall back down to its starting position. The total time can be calculated by dividing the total distance traveled by the projectile by its average speed. Since the projectile is fired straight up, the total distance traveled is twice the distance from the starting position to the highest point. Therefore, the total time to return to its starting position is longer than the time it takes to reach the highest point. Given that the initial speed is 30 m/s, it will take approximately 6 seconds for the projectile to return to its starting position.

when an object in undergoing freefall, it is under the influence of the Earth's gravitational pull causing it to accelerate uniformly and thus increasing its velocity as it falls =]

While a car travels around a circular track at a constant speed, its velocity is not zero because velocity is a vector quantity that includes both speed and direction. The car is continuously changing its direction as it moves along the circular track, so its velocity is not zero. Additionally, the car's acceleration is also not zero because acceleration is the rate of change of velocity. Even though the car is moving at a constant speed, it is constantly changing its direction, which means it is experiencing acceleration. Therefore, the correct answer is none of these.