🔭 physics

1. The problem describes the forces acting on a person during a car crash and how Newton's laws explain the motion. 2. Newton's First Law states that an object in motion stays in m

1. The problem is to explain the meaning of inertia in physics in simple words. 2. Inertia is a property of matter that describes an object's resistance to changes in its state of

1. Problem 22: A ball is thrown vertically upward with an initial speed of 25 m/s. We need to find the time to reach the highest point. 2. Use the formula for velocity under consta

1. **Problem Statement:** Describe the motion of an object under free fall during its rise and fall, focusing on velocity and acceleration at key points. 2. **Key Concept:** When a

1. The problem asks for the average speed of Ajmal's motorcycle over 45 minutes, given a speed-time graph with speeds in meters per second (m/s). 2. Average speed is calculated by

1. **State the problem:** A car accelerates uniformly at 25 m/h per second. After 15 minutes, its speed is 120 km/h. We need to find the initial speed in km/h. 2. **Understand the

1. ප්‍රශ්නය: B සිට C දක්වා 200 m දුරක් 10 m/s වේගයෙන් ගමන් කරමින්, 35 s කාලයක් තුළ ගමන් කරන විට මලේ ගති රාශිය 3 ක් වේ. 2. අපිට දැනගත යුතුයි:

1. **State the problem:** We are given the height equation of an object kicked from a platform: $$h = -4.9t^2 + 7t + 9$$ where $h$ is the height in meters and $t$ is the time in se

1. **State the problem:** We have three forces acting at a point: $F_1 = 24N$ at $120^\circ$, $F_2 = 18N$ at $240^\circ$, and $F_3 = 12N$ at $300^\circ$. We need to find the magnit

1. Problem 7: Find the velocity of an object dropped from rest falling 25 meters, neglecting air resistance. 2. Use the kinematic equation for free fall velocity: $$v = \sqrt{2gh}$

1. **Problem statement:** We have three boxes stacked in a lift accelerating upwards at $0.5\ \text{m/s}^2$. The masses are $m_1=20\ \text{kg}$ (bottom), $m_2=10\ \text{kg}$ (middl

1. The problem asks about the origin of the equation $$R_{eq} = \frac{P}{I_{eq}^2}$$ used for equivalent resistance. 2. This formula comes from the power dissipation formula in res

1. সমস্যাটি হলো: একটি বস্তুকে পৃথিবীর পৃষ্ঠ থেকে খাড়া উপর দিকে এমনভাবে ছুঁড়ে মারতে হবে যাতে বস্তুটি এমন উচ্চতায় উঠে যেখানে অভিকর্ষণ ঘূর্ণন পৃথক (gravitational acceleration) পৃথিব

1. Let's start by understanding what a vector is. A vector is a quantity that has both magnitude (length) and direction. 2. Vectors are often represented as arrows in space, where

1. **State the problem:** We know that the distance $d$ a marble falls is directly proportional to the square of the time $t$ it has been falling. Given that it falls 42.3 metres i

1. **State the problem:** We are given the acceleration of a lorry as a function of time $t$ seconds from rest:

1. **Problem Statement:** We are given the acceleration of a lorry as a function of time $t$ seconds from rest: $$a(t) = \frac{3}{2} - \frac{1}{10}t \quad \text{m/s}^2.$$ We need t

1. **Problem Statement:** We are given the acceleration of a lorry as a function of time $t$ seconds from rest:

1. **State the problem:** We have three forces acting on a body: $$F_1 = 2m + n, \quad F_2 = -3m + 4n, \quad F_3 = 4m - 6n$$

1. **Stating the problem:** We analyze the motion of a lift based on the graph showing floor number vs. time. 2. **Understanding the graph:**

1. The problem asks us to determine whether the object is moving forward, backward, or neither at specific points on a position vs. time graph. 2. The key concept is that the direc